EmailConfirmationService.php
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<?php namespace BookStack\Services;
use BookStack\Notifications\ConfirmEmail;
use BookStack\Repos\UserRepo;
use Carbon\Carbon;
use BookStack\Exceptions\ConfirmationEmailException;
use BookStack\Exceptions\UserRegistrationException;
use BookStack\User;
use Illuminate\Database\Connection as Database;
class EmailConfirmationService
{
protected $db;
protected $users;
/**
* EmailConfirmationService constructor.
* @param Database $db
* @param UserRepo $users
*/
public function __construct(Database $db, UserRepo $users)
{
$this->db = $db;
$this->users = $users;
}
/**
* Create new confirmation for a user,
* Also removes any existing old ones.
* @param User $user
* @throws ConfirmationEmailException
*/
public function sendConfirmation(User $user)
{
if ($user->email_confirmed) {
throw new ConfirmationEmailException('Email has already been confirmed, Try logging in.', '/login');
}
$this->deleteConfirmationsByUser($user);
$token = $this->createEmailConfirmation($user);
$user->notify(new ConfirmEmail($token));
}
/**
* Creates a new email confirmation in the database and returns the token.
* @param User $user
* @return string
*/
public function createEmailConfirmation(User $user)
{
$token = $this->getToken();
$this->db->table('email_confirmations')->insert([
'user_id' => $user->id,
'token' => $token,
'created_at' => Carbon::now(),
'updated_at' => Carbon::now()
]);
return $token;
}
/**
* Gets an email confirmation by looking up the token,
* Ensures the token has not expired.
* @param string $token
* @return EmailConfirmation
* @throws UserRegistrationException
*/
public function getEmailConfirmationFromToken($token)
{
$emailConfirmation = $this->db->table('email_confirmations')->where('token', '=', $token)->first();
// If not found show error
if ($emailConfirmation === null) {
throw new UserRegistrationException('This confirmation token is not valid or has already been used, Please try registering again.', '/register');
}
// If more than a day old
if (Carbon::now()->subDay()->gt(new Carbon($emailConfirmation->created_at))) {
$user = $this->users->getById($emailConfirmation->user_id);
$this->sendConfirmation($user);
throw new UserRegistrationException('The confirmation token has expired, A new confirmation email has been sent.', '/register/confirm');
}
$emailConfirmation->user = $this->users->getById($emailConfirmation->user_id);
return $emailConfirmation;
}
/**
* Delete all email confirmations that belong to a user.
* @param User $user
* @return mixed
*/
public function deleteConfirmationsByUser(User $user)
{
return $this->db->table('email_confirmations')->where('user_id', '=', $user->id)->delete();
}
/**
* Creates a unique token within the email confirmation database.
* @return string
*/
protected function getToken()
{
$token = str_random(24);
while ($this->db->table('email_confirmations')->where('token', '=', $token)->exists()) {
$token = str_random(25);
}
return $token;
}
}