Ldap.php 4.34 KB
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<?php

namespace UnicaenAuth\Authentication\Storage;

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use UnicaenApp\Entity\Ldap\People;
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use UnicaenApp\Service\Ldap\People as LdapPeopleService;
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use UnicaenAuth\Options\ModuleOptions;
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use Zend\Authentication\Exception\InvalidArgumentException;
use Zend\Authentication\Storage;
use Zend\Authentication\Storage\StorageInterface;
use Zend\ServiceManager\ServiceManager;
use Zend\ServiceManager\ServiceManagerAwareInterface;

/**
 * Ldap authentication storage.
 *
 * @author Bertrand GAUTHIER <bertrand.gauthier at unicaen.fr>
 */
class Ldap implements Storage\StorageInterface, ServiceManagerAwareInterface
{
    /**
     * @var StorageInterface
     */
    protected $storage;

    /**
     * @var LdapPeopleService
     */
    protected $mapper;

    /**
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     * @var People
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     */
    protected $resolvedIdentity;

    /**
     * @var ServiceManager
     */
    protected $serviceManager;

    /**
     * Returns true if and only if storage is empty
     *
     * @throws InvalidArgumentException If it is impossible to determine whether storage is empty
     * @return boolean
     */
    public function isEmpty()
    {
        return $this->getStorage()->isEmpty();
    }

    /**
     * Returns the contents of storage
     *
     * Behavior is undefined when storage is empty.
     *
     * @throws InvalidArgumentException If reading contents from storage is impossible
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     * @return People
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     */
    public function read()
    {
        if (null !== $this->resolvedIdentity) {
            return $this->resolvedIdentity;
        }

        $identity = $this->getStorage()->read();

        if (is_scalar($identity)) {
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            $identity = $this->getMapper()->findOneByUsername($identity);
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        }

        if ($identity) {
            $this->resolvedIdentity = $identity;
        } else {
            $this->resolvedIdentity = null;
        }

        return $this->resolvedIdentity;
    }

    /**
     * Writes $contents to storage
     *
     * @param  mixed $contents
     * @throws InvalidArgumentException If writing $contents to storage is impossible
     * @return void
     */
    public function write($contents)
    {
        $this->resolvedIdentity = null;
        $this->getStorage()->write($contents);
    }

    /**
     * Clears contents from storage
     *
     * @throws InvalidArgumentException If clearing contents from storage is impossible
     * @return void
     */
    public function clear()
    {
        $this->resolvedIdentity = null;
        $this->getStorage()->clear();
    }

    /**
     * getStorage
     *
     * @return Storage\StorageInterface
     */
    public function getStorage()
    {
        if (null === $this->storage) {
            $this->setStorage(new Storage\Session);
        }
        return $this->storage;
    }

    /**
     * setStorage
     *
     * @param Storage\StorageInterface $storage
     * @access public
     * @return Ldap
     */
    public function setStorage(Storage\StorageInterface $storage)
    {
        $this->storage = $storage;
        return $this;
    }

    /**
     * getMapper
     *
     * @return LdapPeopleService
     */
    public function getMapper()
    {
        if (null === $this->mapper) {
            $this->mapper = $this->getServiceManager()->get('ldap_people_service')->getMapper();
        }
        return $this->mapper;
    }

    /**
     * setMapper
     *
     * @param LdapPeopleService $mapper
     * @return Ldap
     */
    public function setMapper(LdapPeopleService $mapper)
    {
        $this->mapper = $mapper;
        return $this;
    }

    /**
     * Retrieve service manager instance
     *
     * @return ServiceManager
     */
    public function getServiceManager()
    {
        return $this->serviceManager;
    }

    /**
     * Set service manager instance
     *
     * @param ServiceManager $locator
     * @return void
     */
    public function setServiceManager(ServiceManager $serviceManager)
    {
        $this->serviceManager = $serviceManager;
    }

    /**
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     * @param ModuleOptions $options
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     */
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    public function setOptions(ModuleOptions $options)
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    {
        $this->options = $options;
    }

    /**
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     * @return ModuleOptions
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     */
    public function getOptions()
    {
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        if (!$this->options instanceof ModuleOptions) {
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            $this->setOptions($this->getServiceManager()->get('unicaen-auth_module_options'));
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        }
        return $this->options;
    }
}