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<?php
namespace Illuminate\Auth\Passwords;
use Closure;
use Illuminate\Support\Arr;
use UnexpectedValueException;
use Illuminate\Contracts\Auth\UserProvider;
use Illuminate\Contracts\Auth\PasswordBroker as PasswordBrokerContract;
use Illuminate\Contracts\Auth\CanResetPassword as CanResetPasswordContract;
class PasswordBroker implements PasswordBrokerContract
{
/**
* The password token repository.
*
* @var \Illuminate\Auth\Passwords\TokenRepositoryInterface
*/
protected $tokens;
/**
* The user provider implementation.
*
* @var \Illuminate\Contracts\Auth\UserProvider
*/
protected $users;
/**
* The custom password validator callback.
*
* @var \Closure
*/
protected $passwordValidator;
/**
* Create a new password broker instance.
*
* @param \Illuminate\Auth\Passwords\TokenRepositoryInterface $tokens
* @param \Illuminate\Contracts\Auth\UserProvider $users
* @return void
*/
public function __construct(TokenRepositoryInterface $tokens,
UserProvider $users)
{
$this->users = $users;
$this->tokens = $tokens;
}
/**
* Send a password reset link to a user.
*
* @param array $credentials
* @return string
*/
public function sendResetLink(array $credentials)
{
// First we will check to see if we found a user at the given credentials and
// if we did not we will redirect back to this current URI with a piece of
// "flash" data in the session to indicate to the developers the errors.
$user = $this->getUser($credentials);
if (is_null($user)) {
return static::INVALID_USER;
}
// Once we have the reset token, we are ready to send the message out to this
// user with a link to reset their password. We will then redirect back to
// the current URI having nothing set in the session to indicate errors.
$user->sendPasswordResetNotification(
$this->tokens->create($user)
);
return static::RESET_LINK_SENT;
}
/**
* Reset the password for the given token.
*
* @param array $credentials
* @param \Closure $callback
* @return mixed
*/
public function reset(array $credentials, Closure $callback)
{
// If the responses from the validate method is not a user instance, we will
// assume that it is a redirect and simply return it from this method and
// the user is properly redirected having an error message on the post.
$user = $this->validateReset($credentials);
if (! $user instanceof CanResetPasswordContract) {
return $user;
}
$password = $credentials['password'];
// Once the reset has been validated, we'll call the given callback with the
// new password. This gives the user an opportunity to store the password
// in their persistent storage. Then we'll delete the token and return.
$callback($user, $password);
$this->tokens->delete($user);
return static::PASSWORD_RESET;
}
/**
* Validate a password reset for the given credentials.
*
* @param array $credentials
* @return \Illuminate\Contracts\Auth\CanResetPassword|string
*/
protected function validateReset(array $credentials)
{
if (is_null($user = $this->getUser($credentials))) {
return static::INVALID_USER;
}
if (! $this->validateNewPassword($credentials)) {
return static::INVALID_PASSWORD;
}
if (! $this->tokens->exists($user, $credentials['token'])) {
return static::INVALID_TOKEN;
}
return $user;
}
/**
* Set a custom password validator.
*
* @param \Closure $callback
* @return void
*/
public function validator(Closure $callback)
{
$this->passwordValidator = $callback;
}
/**
* Determine if the passwords match for the request.
*
* @param array $credentials
* @return bool
*/
public function validateNewPassword(array $credentials)
{
if (isset($this->passwordValidator)) {
[$password, $confirm] = [
$credentials['password'],
$credentials['password_confirmation'],
];
return call_user_func(
$this->passwordValidator, $credentials
) && $password === $confirm;
}
return $this->validatePasswordWithDefaults($credentials);
}
/**
* Determine if the passwords are valid for the request.
*
* @param array $credentials
* @return bool
*/
protected function validatePasswordWithDefaults(array $credentials)
{
[$password, $confirm] = [
$credentials['password'],
$credentials['password_confirmation'],
];
return $password === $confirm && mb_strlen($password) >= 8;
}
/**
* Get the user for the given credentials.
*
* @param array $credentials
* @return \Illuminate\Contracts\Auth\CanResetPassword|null
*
* @throws \UnexpectedValueException
*/
public function getUser(array $credentials)
{
$credentials = Arr::except($credentials, ['token']);
$user = $this->users->retrieveByCredentials($credentials);
if ($user && ! $user instanceof CanResetPasswordContract) {
throw new UnexpectedValueException('User must implement CanResetPassword interface.');
}
return $user;
}
/**
* Create a new password reset token for the given user.
*
* @param \Illuminate\Contracts\Auth\CanResetPassword $user
* @return string
*/
public function createToken(CanResetPasswordContract $user)
{
return $this->tokens->create($user);
}
/**
* Delete password reset tokens of the given user.
*
* @param \Illuminate\Contracts\Auth\CanResetPassword $user
* @return void
*/
public function deleteToken(CanResetPasswordContract $user)
{
$this->tokens->delete($user);
}
/**
* Validate the given password reset token.
*
* @param \Illuminate\Contracts\Auth\CanResetPassword $user
* @param string $token
* @return bool
*/
public function tokenExists(CanResetPasswordContract $user, $token)
{
return $this->tokens->exists($user, $token);
}
/**
* Get the password reset token repository implementation.
*
* @return \Illuminate\Auth\Passwords\TokenRepositoryInterface
*/
public function getRepository()
{
return $this->tokens;
}
}