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

Passed

Pull Request — master (#28)

by Tim

created 2022-01-31 11:30 UTC

BaseFilter::parseAuthSourceConfig() F

↳ Parent: BaseFilter

Complexity

Conditions	23
Paths	10562

Size

Total Lines	90
Code Lines	49

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	23
c	1
b	0
f	0
dl	0
loc	90
rs	0
eloc	49
nc	10562
nop	1

How to fix Long Method Complexity

<?php

/**
 * This base LDAP filter class can be extended to enable real filter classes direct access
 * access to the authsource ldap config and connects to the ldap server.
 *
 * @package simplesamlphp/simplesamlphp-module-ldap
 */

declare(strict_types=1);

namespace SimpleSAML\Module\ldap\Auth\Process;

use SimpleSAML\Configuration;
use SimpleSAML\Error;
use SimpleSAML\Logger;
use SimpleSAML\Module\ldap\Utils;
use Symfony\Component\Ldap\Ldap as LdapObject;

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 array $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 LdapObject $ldapObject;

    /**
     * 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->ldapObject = $this->initializeLdap();

        // Set all the filter values, setting defaults if needed
        $this->searchBase = $this->config->getArray('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 \Symfony\Component\Ldap\Ldap
     */
    private function initializeLdap(): LdapObject
    {
        $ldapUtils = new Utils\Ldap();

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

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