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<?php
namespace Illuminate\Auth\Passwords;
use Carbon\Carbon;
use Illuminate\Support\Str;
use Illuminate\Database\ConnectionInterface;
use Illuminate\Contracts\Auth\CanResetPassword as CanResetPasswordContract;
class DatabaseTokenRepository implements TokenRepositoryInterface
{
/**
* The database connection instance.
*
* @var \Illuminate\Database\ConnectionInterface
*/
protected $connection;
/**
* The token database table.
*
* @var string
*/
protected $table;
/**
* The hashing key.
*
* @var string
*/
protected $hashKey;
/**
* The number of seconds a token should last.
*
* @var int
*/
protected $expires;
/**
* Create a new token repository instance.
*
* @param \Illuminate\Database\ConnectionInterface $connection
* @param string $table
* @param string $hashKey
* @param int $expires
* @return void
*/
public function __construct(ConnectionInterface $connection, $table, $hashKey, $expires = 60)
{
$this->table = $table;
$this->hashKey = $hashKey;
$this->expires = $expires * 60;
$this->connection = $connection;
}
/**
* Create a new token record.
*
* @param \Illuminate\Contracts\Auth\CanResetPassword $user
* @return string
*/
public function create(CanResetPasswordContract $user)
{
$email = $user->getEmailForPasswordReset();
$this->deleteExisting($user);
// We will create a new, random token for the user so that we can e-mail them
// a safe link to the password reset form. Then we will insert a record in
// the database so that we can verify the token within the actual reset.
$token = $this->createNewToken();
$this->getTable()->insert($this->getPayload($email, $token));
return $token;
}
/**
* Delete all existing reset tokens from the database.
*
* @param \Illuminate\Contracts\Auth\CanResetPassword $user
* @return int
*/
protected function deleteExisting(CanResetPasswordContract $user)
{
return $this->getTable()->where('email', $user->getEmailForPasswordReset())->delete();
}
/**
* Build the record payload for the table.
*
* @param string $email
* @param string $token
* @return array
*/
protected function getPayload($email, $token)
{
return ['email' => $email, 'token' => $token, 'created_at' => new Carbon];
}
/**
* Determine if a token record exists and is valid.
*
* @param \Illuminate\Contracts\Auth\CanResetPassword $user
* @param string $token
* @return bool
*/
public function exists(CanResetPasswordContract $user, $token)
{
$email = $user->getEmailForPasswordReset();
$token = (array) $this->getTable()->where('email', $email)->where('token', $token)->first();
return $token && ! $this->tokenExpired($token);
}
/**
* Determine if the token has expired.
*
* @param array $token
* @return bool
*/
protected function tokenExpired($token)
{
$expiresAt = Carbon::parse($token['created_at'])->addSeconds($this->expires);
return $expiresAt->isPast();
}
/**
* Delete a token record by token.
*
* @param string $token
* @return void
*/
public function delete($token)
{
$this->getTable()->where('token', $token)->delete();
}
/**
* Delete expired tokens.
*
* @return void
*/
public function deleteExpired()
{
$expiredAt = Carbon::now()->subSeconds($this->expires);
$this->getTable()->where('created_at', '<', $expiredAt)->delete();
}
/**
* Create a new token for the user.
*
* @return string
*/
public function createNewToken()
{
return hash_hmac('sha256', Str::random(40), $this->hashKey);
}
/**
* Begin a new database query against the table.
*
* @return \Illuminate\Database\Query\Builder
*/
protected function getTable()
{
return $this->connection->table($this->table);
}
/**
* Get the database connection instance.
*
* @return \Illuminate\Database\ConnectionInterface
*/
public function getConnection()
{
return $this->connection;
}
}