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<?php |
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declare(strict_types=1); |
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namespace SimpleSAML\Module\ldap\Auth\Source; |
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use SimpleSAML\Assert\Assert; |
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use SimpleSAML\Configuration; |
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use SimpleSAML\Module\core\Auth\UserPassBase; |
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use SimpleSAML\Module\ldap\Utils; |
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use Symfony\Component\Ldap\Adapter\ExtLdap\Query; |
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use function array_fill_keys; |
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use function array_keys; |
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use function array_map; |
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use function array_values; |
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use function explode; |
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use function sprintf; |
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use function str_replace; |
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use function var_export; |
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/** |
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* LDAP authentication source. |
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* |
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* See the ldap-entry in config-templates/authsources.php for information about |
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* configuration of this authentication source. |
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* |
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* @package simplesamlphp/simplesamlphp-module-ldap |
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*/ |
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class Ldap extends UserPassBase |
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{ |
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/** |
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* An LDAP configuration object. |
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*/ |
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private Configuration $ldapConfig; |
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/** |
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* Constructor for this authentication source. |
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* |
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* @param array $info Information about this authentication source. |
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* @param array $config Configuration. |
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*/ |
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public function __construct(array $info, array $config) |
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{ |
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// Call the parent constructor first, as required by the interface |
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parent::__construct($info, $config); |
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$this->ldapConfig = Configuration::loadFromArray( |
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$config, |
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'authsources[' . var_export($this->authId, true) . ']' |
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); |
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} |
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/** |
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* Attempt to log in using the given username and password. |
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* |
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* @param string $username The username the user wrote. |
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* @param string $password The password the user wrote. |
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* @return array Associative array with the users attributes. |
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*/ |
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protected function login(string $username, string $password): array |
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{ |
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$encryption = $this->ldapConfig->getString('encryption', 'ssl'); |
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Assert::oneOf($encryption, ['none', 'ssl', 'tls']); |
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$version = $this->ldapConfig->getInteger('version', 3); |
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Assert::positiveInteger($version); |
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$ldapUtils = new Utils\Ldap(); |
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$ldapServers = $ldapUtils->create( |
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explode(' ', $this->ldapConfig->getString('connection_string')), |
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$encryption, |
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$version, |
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$this->ldapConfig->getString('extension', 'ext_ldap') |
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); |
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$searchScope = $this->ldapConfig->getString('search.scope', Query::SCOPE_SUB); |
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Assert::oneOf($searchScope, [Query::SCOPE_BASE, Query::SCOPE_ONE, Query::SCOPE_SUB]); |
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$referrals = $this->ldapConfig->getValue('referrals', Query::DEREF_NEVER); |
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Assert::oneOf($referrals, [Query::DEREF_ALWAYS, Query::DEREF_NEVER, Query::DEREF_FINDING, Query::DEREF_SEARCHING]); |
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$timeout = $this->ldapConfig->getString('timeout', 3); |
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$searchBase = $this->ldapConfig->getArray('search.base'); |
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$options = [ |
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'scope' => $searchScope, |
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'timeout' => $timeout, |
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'deref' => $referrals, |
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]; |
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$searchEnable = $this->ldapConfig->getBoolean('search.enable', false); |
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if ($searchEnable === false) { |
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$dnPattern = $this->ldapConfig->getString('dnpattern'); |
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$dn = str_replace('%username%', $username, $dnPattern); |
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} else { |
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$searchUsername = $this->ldapConfig->getString('search.username'); |
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Assert::notWhitespaceOnly($searchUsername); |
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$searchPassword = $this->ldapConfig->getString('search.password', null); |
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Assert::nullOrnotWhitespaceOnly($searchPassword); |
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$searchAttributes = $this->ldapConfig->getArray('search.attributes'); |
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$searchFilter = $this->ldapConfig->getString('search.filter', null); |
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$ldap = $ldapUtils->bind($ldapServers, $searchUsername, $searchPassword); |
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$filter = ''; |
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foreach ($searchAttributes as $attr) { |
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$filter .= '(' . $attr . '=' . $username . ')'; |
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} |
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$filter = '(|' . $filter . ')'; |
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// Append LDAP filters if defined |
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if ($searchFilter !== null) { |
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$filter = "(&" . $filter . $searchFilter . ")"; |
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} |
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/** @psalm-var \Symfony\Component\Ldap\Entry $entry */ |
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$entry = $ldapUtils->search($ldap, $searchBase, $filter, $options, false); |
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$dn = $entry->getDn(); |
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} |
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$ldap = $ldapUtils->bind($ldapServers, $dn, $password); |
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$filter = sprintf('(distinguishedName=%s)', $dn); |
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/** @psalm-var \Symfony\Component\Ldap\Entry $entry */ |
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$entry = $ldapUtils->search($ldap, $searchBase, $filter, $options, false); |
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$attributes = $this->ldapConfig->getValue('attributes', []); |
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if ($attributes === null) { |
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$result = $entry->getAttributes(); |
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} else { |
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Assert::isArray($attributes); |
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$result = array_intersect_key( |
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$entry->getAttributes(), |
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array_fill_keys(array_values($attributes), null) |
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); |
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} |
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$binaries = array_intersect( |
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array_keys($result), |
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$this->ldapConfig->getArray('attributes.binary', []), |
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); |
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foreach ($binaries as $binary) { |
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$result[$binary] = array_map('base64_encode', $result[$binary]); |
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} |
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return $result; |
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} |
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} |
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simplesamlphp /
simplesamlphp-module-ldap
