BaseFilter::parseAuthSourceConfig() - Code Metrics - Inspection of "WIP: Migrate to symfony/ldap" - simplesamlphp/simplesamlphp-module-ldap - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#28)

by Tim

created 2021-09-06 21:44 UTC

BaseFilter::parseAuthSourceConfig() F

↳ Parent: Project

Complexity

Conditions	23
Paths	10562

Size

Total Lines	84
Code Lines	43

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	23
eloc	43
c	1
b	0
f	0
nc	10562
nop	1
dl	0
loc	84
rs	0

How to fix Long Method Complexity

<?php

/**
 * This base LDAP filter class can be extended to enable real
 * filter classes direct access to the authsource ldap config
 * and connects to the ldap server.
 *
 * Updated: 20161223 Remy Blom
 *          - Wrapped the building of authsource config with issets
 *
 * @package SimpleSAMLphp
 */

declare(strict_types=1);

namespace SimpleSAML\Module\ldap\Auth\Process;

use SimpleSAML\Configuration;
use SimpleSAML\Error;
use SimpleSAML\Logger;
use SimpleSAML\Module\ldap\Auth\Ldap;
use SimpleSAML\Module\ldap\Utils;

abstract class BaseFilter extends \SimpleSAML\Auth\ProcessingFilter
{
    // TODO: Support ldap:LDAPMulti, if possible
    protected static array $ldapsources = ['ldap:Ldap', 'authX509:X509userCert'];

    /**
     * List of attribute "alias's" linked to the real attribute
     * name. Used for abstraction / configuration of the LDAP
     * attribute names, which may change between dir service.
     *
     * @var array
     */
    protected array $attribute_map;

    /**
     * The base DN of the LDAP connection. Used when searching the LDAP server.
     *
     * @var array
     */
    protected $searchBase;

    /**
     * The construct method will change the filter config into
     * a \SimpleSAML\Configuration object and store it here for
     * later use, if needed.
     *
     * @var \SimpleSAML\Configuration
     */
    protected Configuration $config;

    /**
     * Array of LDAP connection objects. Stored here to be accessed later during processing.
     *
     * @var \Symfony\Component\Ldap\Ldap[]
     */
    protected array $ldapServers;

    /**
     * The class "title" used in logging and exception messages.
     * This should be prepended to the beginning of the message.
     *
     * @var string
     */
    protected string $title = 'ldap:BaseFilter';

    /**
     * List of LDAP object types, used to determine the type of
     * object that a DN references.
     *
     * @var array
     */
    protected array $type_map;


    /**
     * Checks the authsource, if defined, for configuration values
     * to the LDAP server. Then sets up the LDAP connection for the
     * instance/object and stores everything in class members.
     *
     * @throws \SimpleSAML\Error\Exception
     * @param array &$config
     * @param mixed $reserved
     */
    public function __construct(array &$config, $reserved)
    {
        parent::__construct($config, $reserved);

        // Change the class $title to match it's true name
        // This way if the class is extended the proper name is used
        $classname = get_class($this);
        $classname = explode('_', $classname);
        $this->title = 'ldap:' . end($classname);

        // Log the construction
        Logger::debug(sprintf('%s : Creating and configuring the filter.', $this->title));

        // If an authsource was defined (an not empty string)...
        if (isset($config['authsource']) && $config['authsource'] !== '') {
            $authconfig = $this->parseAuthSourceConfig($config['authsource']);

            // Merge the authsource config with the filter config,
            // but have the filter config override the authsource config
            $config = array_merge($authconfig, $config);

            // Authsource complete
            Logger::debug(sprintf(
                '%s : Retrieved authsource [%s] configuration values: %s',
                $this->title,
                $config['authsource'],
                $this->varExport($authconfig)
            ));
        }

        // Convert the config array to a config class,
        // that way we can verify type and define defaults.
        // Store in the instance in-case needed later, by a child class.
        $this->config = Configuration::loadFromArray($config, 'ldap:AuthProcess');

        // Initialize the Ldap-object
        $this->ldapServers = $this->initializeLdap();

        // Set all the filter values, setting defaults if needed
        $this->searchBase = $this->config->getArrayizeString('search.base', '');

        // Log the member values retrieved above
        Logger::debug(sprintf(
            '%s : Configuration values retrieved; BaseDN: %s',
            $this->title,
            $this->varExport($this->searchBase)
        ));

        // Setup the attribute map which will be used to search LDAP
        $this->attribute_map = [
            'dn'       => $this->config->getString('attribute.dn', 'distinguishedName'),
            'groups'   => $this->config->getString('attribute.groups', 'groups'),
            'member'   => $this->config->getString('attribute.member', 'member'),
            'memberof' => $this->config->getString('attribute.memberof', 'memberOf'),
            'name'     => $this->config->getString('attribute.groupname', 'name'),
            'return'   => $this->config->getString('attribute.return', 'distinguishedName'),
            'type'     => $this->config->getString('attribute.type', 'objectClass'),
            'username' => $this->config->getString('attribute.username', 'sAMAccountName')
        ];

        // Log the attribute map
        Logger::debug(sprintf(
            '%s : Attribute map created: $s',
            $this->title,
            $this->varExport($this->attribute_map)
        ));

        // Setup the object type map which is used to determine a DNs' type
        $this->type_map = [
            'group' => $this->config->getString('type.group', 'group'),
            'user'  => $this->config->getString('type.user', 'user')
        ];

        // Log the type map
        Logger::debug(sprintf(
            '%s : Type map created: %s',
            $this->title,
            $this->varExport($this->type_map)
        ));
    }


    /**
     * Parse authsource config
     *
     * @param string $as The name of the authsource
     */
    private function parseAuthSourceConfig(string $as) : array
    {
        // Log the authsource request
        Logger::debug(sprintf(
            '%s : Attempting to get configuration values from authsource [%s]'
            $this->title,

            $as
        ));

        // Get the authsources file, which should contain the config
        $authsources = Configuration::getConfig('authsources.php');

        // Verify that the authsource config exists
        if (!$authsources->hasValue($as)) {
            throw new Error\Exception(sprintf(
                '%s : Authsource [%s] defined in filter parameters not found in authsources.php',
                $this->title,
                $as
            ));
        }

        // Get just the specified authsource config values
        $authsource = $authsources->getArray($as);

        // Make sure it is an ldap source
        if (isset($authsource[0]) && !in_array($authsource[0], self::$ldapsources)) {
            throw new Error\Exception(sprintf(
                '%s : Authsource [%s] specified in filter parameters is not an ldap:LDAP type',
                $this->title,
                $as
            ));
        }

        // Build the authsource config
        $authconfig = [];
        if (isset($authsource['connection_string'])) {
            $authconfig['connection_string'] = $authsource['connection_string'];
        }
        if (isset($authsource['encryption'])) {
            $authconfig['encryption'] = $authsource['encryption'];
        }
        if (isset($authsource['version'])) {
            $authconfig['version'] = $authsource['version'];
        }
        if (isset($authsource['timeout'])) {
            $authconfig['timeout'] = $authsource['timeout'];
        }
        if (isset($authsource['debug'])) {
            $authconfig['debug']      = $authsource['debug'];
        }
        if (isset($authsource['referrals'])) {
            $authconfig['referrals']  = $authsource['referrals'];
        }

        // only set when search.enabled = true
        if (isset($authsource['search.enable']) && ($authsource['search.enable'] === true)) {
            if (isset($authsource['search.base'])) {
                $authconfig['search.base'] = $authsource['search.base'];
            }
            if (isset($authsource['search.scope'])) {
                $authconfig['search.scope'] = $authsource['search.scope'];
            }
            if (isset($authsource['search.username'])) {
                $authconfig['search.username']   = $authsource['search.username'];
            }
            if (isset($authsource['search.password'])) {
                $authconfig['search.password']   = $authsource['search.password'];
            }

            // Only set the username attribute if the authsource specifies one attribute
            if (
                isset($authsource['search.attributes'])
                && is_array($authsource['search.attributes'])
                && count($authsource['search.attributes']) == 1
            ) {
                $authconfig['attribute.username'] = reset($authsource['search.attributes']);
            }
        }

        // only set when priv.read = true
        if (isset($authsource['priv.read']) && $authsource['priv.read']) {
            if (isset($authsource['priv.username'])) {
                $authconfig['priv.username'] = $authsource['priv.username'];
            }
            if (isset($authsource['priv.password'])) {
                $authconfig['priv.password'] = $authsource['priv.password'];
            }
        }

        return $authconfig;
    }


    /**
     * Initialize the Ldap-object
     *
     * @return array
     */
    private function initializeLdap(): array
    {
        $ldapUtils = new Utils\Ldap();

        return $ldapUtils->create(
            explode(' ', $this->config->getString('connection_string')),
            $this->config->getString('encryption', 'ssl'),
            $this->config->getInteger('version', 3),
            $this->config->getString('extension', 'ext_ldap'),
            $this->config->getBoolean('debug', false),
            [
                'network_timeout' => $this->config->getInteger('timeout', 3),
                'referrals' => $this->config->getBoolean('referrals', false),
            ]
        );
    }


    /**
     * Local utility function to get details about a variable,
     * basically converting it to a string to be used in a log
     * message. The var_export() function returns several lines
     * so this will remove the new lines and trim each line.
     *
     * @param mixed $value
     * @return string
     */
    protected function varExport($value): string
    {
        if (is_array($value)) {
            // remove sensitive data
            foreach ($value as $key => &$val) {
                if ($key === 'search.password') {
                    $val = empty($val) ? '' : '********';
                }
            }
            unset($val);
        }

        $export = var_export($value, true);
        $lines = explode("\n", $export);
        foreach ($lines as &$line) {
            $line = trim($line);
        }
        return implode(' ', $lines);
    }
}


1			<?php
2
3			/**
4			* This base LDAP filter class can be extended to enable real
5			* filter classes direct access to the authsource ldap config
6			* and connects to the ldap server.
7			*
8			* Updated: 20161223 Remy Blom
9			* - Wrapped the building of authsource config with issets
10			*
11			* @package SimpleSAMLphp
12			*/
13
14			declare(strict_types=1);
15
16			namespace SimpleSAML\Module\ldap\Auth\Process;
17
18			use SimpleSAML\Configuration;
19			use SimpleSAML\Error;
20			use SimpleSAML\Logger;
21			use SimpleSAML\Module\ldap\Auth\Ldap;
22			use SimpleSAML\Module\ldap\Utils;
23
24			abstract class BaseFilter extends \SimpleSAML\Auth\ProcessingFilter
25			{
26			// TODO: Support ldap:LDAPMulti, if possible
27			protected static array $ldapsources = ['ldap:Ldap', 'authX509:X509userCert'];
28
29			/**
30			* List of attribute "alias's" linked to the real attribute
31			* name. Used for abstraction / configuration of the LDAP
32			* attribute names, which may change between dir service.
33			*
34			* @var array
35			*/
36			protected array $attribute_map;
37
38			/**
39			* The base DN of the LDAP connection. Used when searching the LDAP server.
40			*
41			* @var array
42			*/
43			protected $searchBase;
44
45			/**
46			* The construct method will change the filter config into
47			* a \SimpleSAML\Configuration object and store it here for
48			* later use, if needed.
49			*
50			* @var \SimpleSAML\Configuration
51			*/
52			protected Configuration $config;
53
54			/**
55			* Array of LDAP connection objects. Stored here to be accessed later during processing.
56			*
57			* @var \Symfony\Component\Ldap\Ldap[]
58			*/
59			protected array $ldapServers;
60
61			/**
62			* The class "title" used in logging and exception messages.
63			* This should be prepended to the beginning of the message.
64			*
65			* @var string
66			*/
67			protected string $title = 'ldap:BaseFilter';
68
69			/**
70			* List of LDAP object types, used to determine the type of
71			* object that a DN references.
72			*
73			* @var array
74			*/
75			protected array $type_map;
76
77
78			/**
79			* Checks the authsource, if defined, for configuration values
80			* to the LDAP server. Then sets up the LDAP connection for the
81			* instance/object and stores everything in class members.
82			*
83			* @throws \SimpleSAML\Error\Exception
84			* @param array &$config
85			* @param mixed $reserved
86			*/
87			public function __construct(array &$config, $reserved)
88			{
89			parent::__construct($config, $reserved);
90
91			// Change the class $title to match it's true name
92			// This way if the class is extended the proper name is used
93			$classname = get_class($this);
94			$classname = explode('_', $classname);
95			$this->title = 'ldap:' . end($classname);
96
97			// Log the construction
98			Logger::debug(sprintf('%s : Creating and configuring the filter.', $this->title));
99
100			// If an authsource was defined (an not empty string)...
101			if (isset($config['authsource']) && $config['authsource'] !== '') {
102			$authconfig = $this->parseAuthSourceConfig($config['authsource']);
103
104			// Merge the authsource config with the filter config,
105			// but have the filter config override the authsource config
106			$config = array_merge($authconfig, $config);
107
108			// Authsource complete
109			Logger::debug(sprintf(
110			'%s : Retrieved authsource [%s] configuration values: %s',
111			$this->title,
112			$config['authsource'],
113			$this->varExport($authconfig)
114			));
115			}
116
117			// Convert the config array to a config class,
118			// that way we can verify type and define defaults.
119			// Store in the instance in-case needed later, by a child class.
120			$this->config = Configuration::loadFromArray($config, 'ldap:AuthProcess');
121
122			// Initialize the Ldap-object
123			$this->ldapServers = $this->initializeLdap();
124
125			// Set all the filter values, setting defaults if needed
126			$this->searchBase = $this->config->getArrayizeString('search.base', '');
127
128			// Log the member values retrieved above
129			Logger::debug(sprintf(
130			'%s : Configuration values retrieved; BaseDN: %s',
131			$this->title,
132			$this->varExport($this->searchBase)
133			));
134
135			// Setup the attribute map which will be used to search LDAP
136			$this->attribute_map = [
137			'dn' => $this->config->getString('attribute.dn', 'distinguishedName'),
138			'groups' => $this->config->getString('attribute.groups', 'groups'),
139			'member' => $this->config->getString('attribute.member', 'member'),
140			'memberof' => $this->config->getString('attribute.memberof', 'memberOf'),
141			'name' => $this->config->getString('attribute.groupname', 'name'),
142			'return' => $this->config->getString('attribute.return', 'distinguishedName'),
143			'type' => $this->config->getString('attribute.type', 'objectClass'),
144			'username' => $this->config->getString('attribute.username', 'sAMAccountName')
145			];
146
147			// Log the attribute map
148			Logger::debug(sprintf(
149			'%s : Attribute map created: $s',
150			$this->title,
151			$this->varExport($this->attribute_map)
152			));
153
154			// Setup the object type map which is used to determine a DNs' type
155			$this->type_map = [
156			'group' => $this->config->getString('type.group', 'group'),
157			'user' => $this->config->getString('type.user', 'user')
158			];
159
160			// Log the type map
161			Logger::debug(sprintf(
162			'%s : Type map created: %s',
163			$this->title,
164			$this->varExport($this->type_map)
165			));
166			}
167
168
169			/**
170			* Parse authsource config
171			*
172			* @param string $as The name of the authsource
173			*/
174			private function parseAuthSourceConfig(string $as) : array
175			{
176			// Log the authsource request
177			Logger::debug(sprintf(
178			'%s : Attempting to get configuration values from authsource [%s]'
179			$this->title,
			0 ignored issues – show Bug introduced 2021-09-06 21:46 UTC by Report Bug Copy Issue Report A parse error occurred: Syntax error, unexpected T_VARIABLE, expecting ',' or ')' on line 179 at column 12 Loading history...
180			$as
181			));
182
183			// Get the authsources file, which should contain the config
184			$authsources = Configuration::getConfig('authsources.php');
185
186			// Verify that the authsource config exists
187			if (!$authsources->hasValue($as)) {
188			throw new Error\Exception(sprintf(
189			'%s : Authsource [%s] defined in filter parameters not found in authsources.php',
190			$this->title,
191			$as
192			));
193			}
194
195			// Get just the specified authsource config values
196			$authsource = $authsources->getArray($as);
197
198			// Make sure it is an ldap source
199			if (isset($authsource[0]) && !in_array($authsource[0], self::$ldapsources)) {
200			throw new Error\Exception(sprintf(
201			'%s : Authsource [%s] specified in filter parameters is not an ldap:LDAP type',
202			$this->title,
203			$as
204			));
205			}
206
207			// Build the authsource config
208			$authconfig = [];
209			if (isset($authsource['connection_string'])) {
210			$authconfig['connection_string'] = $authsource['connection_string'];
211			}
212			if (isset($authsource['encryption'])) {
213			$authconfig['encryption'] = $authsource['encryption'];
214			}
215			if (isset($authsource['version'])) {
216			$authconfig['version'] = $authsource['version'];
217			}
218			if (isset($authsource['timeout'])) {
219			$authconfig['timeout'] = $authsource['timeout'];
220			}
221			if (isset($authsource['debug'])) {
222			$authconfig['debug'] = $authsource['debug'];
223			}
224			if (isset($authsource['referrals'])) {
225			$authconfig['referrals'] = $authsource['referrals'];
226			}
227
228			// only set when search.enabled = true
229			if (isset($authsource['search.enable']) && ($authsource['search.enable'] === true)) {
230			if (isset($authsource['search.base'])) {
231			$authconfig['search.base'] = $authsource['search.base'];
232			}
233			if (isset($authsource['search.scope'])) {
234			$authconfig['search.scope'] = $authsource['search.scope'];
235			}
236			if (isset($authsource['search.username'])) {
237			$authconfig['search.username'] = $authsource['search.username'];
238			}
239			if (isset($authsource['search.password'])) {
240			$authconfig['search.password'] = $authsource['search.password'];
241			}
242
243			// Only set the username attribute if the authsource specifies one attribute
244			if (
245			isset($authsource['search.attributes'])
246			&& is_array($authsource['search.attributes'])
247			&& count($authsource['search.attributes']) == 1
248			) {
249			$authconfig['attribute.username'] = reset($authsource['search.attributes']);
250			}
251			}
252
253			// only set when priv.read = true
254			if (isset($authsource['priv.read']) && $authsource['priv.read']) {
255			if (isset($authsource['priv.username'])) {
256			$authconfig['priv.username'] = $authsource['priv.username'];
257			}
258			if (isset($authsource['priv.password'])) {
259			$authconfig['priv.password'] = $authsource['priv.password'];
260			}
261			}
262
263			return $authconfig;
264			}
265
266
267			/**
268			* Initialize the Ldap-object
269			*
270			* @return array
271			*/
272			private function initializeLdap(): array
273			{
274			$ldapUtils = new Utils\Ldap();
275
276			return $ldapUtils->create(
277			explode(' ', $this->config->getString('connection_string')),
278			$this->config->getString('encryption', 'ssl'),
279			$this->config->getInteger('version', 3),
280			$this->config->getString('extension', 'ext_ldap'),
281			$this->config->getBoolean('debug', false),
282			[
283			'network_timeout' => $this->config->getInteger('timeout', 3),
284			'referrals' => $this->config->getBoolean('referrals', false),
285			]
286			);
287			}
288
289
290			/**
291			* Local utility function to get details about a variable,
292			* basically converting it to a string to be used in a log
293			* message. The var_export() function returns several lines
294			* so this will remove the new lines and trim each line.
295			*
296			* @param mixed $value
297			* @return string
298			*/
299			protected function varExport($value): string
300			{
301			if (is_array($value)) {
302			// remove sensitive data
303			foreach ($value as $key => &$val) {
304			if ($key === 'search.password') {
305			$val = empty($val) ? '' : '********';
306			}
307			}
308			unset($val);
309			}
310
311			$export = var_export($value, true);
312			$lines = explode("\n", $export);
313			foreach ($lines as &$line) {
314			$line = trim($line);
315			}
316			return implode(' ', $lines);
317			}
318			}
319

simplesamlphp / simplesamlphp-module-ldap

Pull Request — master (#28)

BaseFilter::parseAuthSourceConfig() F

Complexity

Size

Duplication

Importance

How to fix Long Method Complexity

Long Method

Duplication Side-by-Side

Filter issues like