Completed
Push — master ( 36e04e...62be60 )
by Philip
02:22
created

PasswordReset::resetPassword()   A

Complexity

Conditions 2
Paths 2

Size

Total Lines 16
Code Lines 11

Duplication

Lines 0
Ratio 0 %

Importance

Changes 3
Bugs 0 Features 1
Metric Value
c 3
b 0
f 1
dl 0
loc 16
rs 9.4285
cc 2
eloc 11
nc 2
nop 2
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<?php
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/*
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 * This file is part of the CRUDlexUser package.
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 *
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 * (c) Philip Lehmann-Böhm <[email protected]>
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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namespace CRUDlex;
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use CRUDlex\UserSetup;
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/**
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 * This class offers some features to implement a password reset flow.
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 */
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class PasswordReset {
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    /**
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     * Holds the user Data instance.
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     */
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    protected $userData;
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    /**
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     * Holds the password reset Data instance.
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     */
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    protected $passwordResetData;
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    /**
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     * Gets the password reset of a token but only if it is younger than 48h.
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     *
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     * @param string $token
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     * the password reset token
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     *
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     * @return null|CRUDlex\Entity
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     * the password reset request
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     */
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    protected function getValidPasswordReset($token) {
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        $passwordResets = $this->passwordResetData->listEntries(array('token' => $token));
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        if (count($passwordResets) !== 1) {
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            return null;
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        }
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        $passwordReset = $passwordResets[0];
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        $createdAt = $passwordReset->get('created_at');
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        if (strtotime($createdAt . ' UTC') < time() - 2 * 24 * 60 * 60 || $passwordReset->get('reset')) {
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            return null;
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        }
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        return $passwordReset;
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    }
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    /**
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     * Constructor.
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     *
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     * @param CRUDlex\Data $userData
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     * the user data instance
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     * @param CRUDlex\Data $passwordResetData
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     * the password reset data instance
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     */
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    public function __construct($userData, $passwordResetData) {
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        $this->userData = $userData;
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        $this->passwordResetData = $passwordResetData;
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    }
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    /**
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     * Creates a password reset request.
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     *
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     * @param string $identifyingField
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     * the identifying field to grab an user, likely the email
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     * @param string $identifyingValue
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     * the identifying value to grab an user, likely the email
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     *
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     * @return null|string
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     * the token of the password reset instance ready to be send to the user via
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     * a secondary channel like email; might be null if the user could not be
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     * identified uniquly via the given parameters: either zero or more than one
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     * users were found
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     */
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    public function requestPasswordReset($identifyingField, $identifyingValue) {
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        $users = $this->userData->listEntries(array($identifyingField => $identifyingValue));
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        if (count($users) !== 1) {
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            return null;
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        }
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        $user = $users[0];
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        $userSetup = new UserSetup();
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        do {
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            $token = $userSetup->getSalt(32);
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            $tokenFound = $this->passwordResetData->countBy($this->passwordResetData->getDefinition()->getTable(), array('token' => $token), array('token' => '='), true) === 0;
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        } while (!$tokenFound);
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        $passwordReset = $this->passwordResetData->createEmpty();
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        $passwordReset->set('user', $user->get('id'));
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        $passwordReset->set('token', $token);
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        $this->passwordResetData->create($passwordReset);
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        return $token;
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    }
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    /**
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     * Resets the password of an user belonging to the given password reset
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     * token.
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     *
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     * @param string $token
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     * the password reset token
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     * @param string $newPassword
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     * the new password
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     *
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     * @return boolean
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     * true on success, false on failure with one of this reasons:
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     * - no or more than one password reset request found for this token
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     * - the password request for this token is older than 48h
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     * - the password request for this token has already been used
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     */
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    public function resetPassword($token, $newPassword) {
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        $passwordReset = $this->getValidPasswordReset($token);
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        if ($passwordReset === null) {
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            return false;
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        }
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        $user = $this->userData->get($passwordReset->get('user'));
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        $user->set('password', $newPassword);
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        $this->userData->update($user);
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        $reset = gmdate('Y-m-d H:i:s');
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        $passwordReset->set('reset', $reset);
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        $this->passwordResetData->update($passwordReset);
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        return true;
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    }
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}
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