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| <?php | |
| /** | |
| * PHPMailer POP-Before-SMTP Authentication Class. | |
| * PHP Version 5.5. | |
| * | |
| * @see https://github.com/PHPMailer/PHPMailer/ The PHPMailer GitHub project | |
| * | |
| * @author Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk> | |
| * @author Jim Jagielski (jimjag) <jimjag@gmail.com> | |
| * @author Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net> | |
| * @author Brent R. Matzelle (original founder) | |
| * @copyright 2012 - 2017 Marcus Bointon | |
| * @copyright 2010 - 2012 Jim Jagielski | |
| * @copyright 2004 - 2009 Andy Prevost | |
| * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License | |
| * @note This program is distributed in the hope that it will be useful - WITHOUT | |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| * FITNESS FOR A PARTICULAR PURPOSE. | |
| */ | |
| namespace PHPMailer\PHPMailer; | |
| /** | |
| * PHPMailer POP-Before-SMTP Authentication Class. | |
| * Specifically for PHPMailer to use for RFC1939 POP-before-SMTP authentication. | |
| * 1) This class does not support APOP authentication. | |
| * 2) Opening and closing lots of POP3 connections can be quite slow. If you need | |
| * to send a batch of emails then just perform the authentication once at the start, | |
| * and then loop through your mail sending script. Providing this process doesn't | |
| * take longer than the verification period lasts on your POP3 server, you should be fine. | |
| * 3) This is really ancient technology; you should only need to use it to talk to very old systems. | |
| * 4) This POP3 class is deliberately lightweight and incomplete, and implements just | |
| * enough to do authentication. | |
| * If you want a more complete class there are other POP3 classes for PHP available. | |
| * | |
| * @author Richard Davey (original author) <rich@corephp.co.uk> | |
| * @author Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk> | |
| * @author Jim Jagielski (jimjag) <jimjag@gmail.com> | |
| * @author Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net> | |
| */ | |
| class POP3 | |
| { | |
| /** | |
| * The POP3 PHPMailer Version number. | |
| * | |
| * @var string | |
| */ | |
| const VERSION = '6.0.1'; | |
| /** | |
| * Default POP3 port number. | |
| * | |
| * @var int | |
| */ | |
| const DEFAULT_PORT = 110; | |
| /** | |
| * Default timeout in seconds. | |
| * | |
| * @var int | |
| */ | |
| const DEFAULT_TIMEOUT = 30; | |
| /** | |
| * Debug display level. | |
| * Options: 0 = no, 1+ = yes. | |
| * | |
| * @var int | |
| */ | |
| public $do_debug = 0; | |
| /** | |
| * POP3 mail server hostname. | |
| * | |
| * @var string | |
| */ | |
| public $host; | |
| /** | |
| * POP3 port number. | |
| * | |
| * @var int | |
| */ | |
| public $port; | |
| /** | |
| * POP3 Timeout Value in seconds. | |
| * | |
| * @var int | |
| */ | |
| public $tval; | |
| /** | |
| * POP3 username. | |
| * | |
| * @var string | |
| */ | |
| public $username; | |
| /** | |
| * POP3 password. | |
| * | |
| * @var string | |
| */ | |
| public $password; | |
| /** | |
| * Resource handle for the POP3 connection socket. | |
| * | |
| * @var resource | |
| */ | |
| protected $pop_conn; | |
| /** | |
| * Are we connected? | |
| * | |
| * @var bool | |
| */ | |
| protected $connected = false; | |
| /** | |
| * Error container. | |
| * | |
| * @var array | |
| */ | |
| protected $errors = []; | |
| /** | |
| * Line break constant. | |
| */ | |
| const LE = "\r\n"; | |
| /** | |
| * Simple static wrapper for all-in-one POP before SMTP. | |
| * | |
| * @param string $host The hostname to connect to | |
| * @param int|bool $port The port number to connect to | |
| * @param int|bool $timeout The timeout value | |
| * @param string $username | |
| * @param string $password | |
| * @param int $debug_level | |
| * | |
| * @return bool | |
| */ | |
| public static function popBeforeSmtp( | |
| $host, | |
| $port = false, | |
| $timeout = false, | |
| $username = '', | |
| $password = '', | |
| $debug_level = 0 | |
| ) { | |
| $pop = new self(); | |
| return $pop->authorise($host, $port, $timeout, $username, $password, $debug_level); | |
| } | |
| /** | |
| * Authenticate with a POP3 server. | |
| * A connect, login, disconnect sequence | |
| * appropriate for POP-before SMTP authorisation. | |
| * | |
| * @param string $host The hostname to connect to | |
| * @param int|bool $port The port number to connect to | |
| * @param int|bool $timeout The timeout value | |
| * @param string $username | |
| * @param string $password | |
| * @param int $debug_level | |
| * | |
| * @return bool | |
| */ | |
| public function authorise($host, $port = false, $timeout = false, $username = '', $password = '', $debug_level = 0) | |
| { | |
| $this->host = $host; | |
| // If no port value provided, use default | |
| if (false === $port) { | |
| $this->port = static::DEFAULT_PORT; | |
| } else { | |
| $this->port = (int) $port; | |
| } | |
| // If no timeout value provided, use default | |
| if (false === $timeout) { | |
| $this->tval = static::DEFAULT_TIMEOUT; | |
| } else { | |
| $this->tval = (int) $timeout; | |
| } | |
| $this->do_debug = $debug_level; | |
| $this->username = $username; | |
| $this->password = $password; | |
| // Reset the error log | |
| $this->errors = []; | |
| // connect | |
| $result = $this->connect($this->host, $this->port, $this->tval); | |
| if ($result) { | |
| $login_result = $this->login($this->username, $this->password); | |
| if ($login_result) { | |
| $this->disconnect(); | |
| return true; | |
| } | |
| } | |
| // We need to disconnect regardless of whether the login succeeded | |
| $this->disconnect(); | |
| return false; | |
| } | |
| /** | |
| * Connect to a POP3 server. | |
| * | |
| * @param string $host | |
| * @param int|bool $port | |
| * @param int $tval | |
| * | |
| * @return bool | |
| */ | |
| public function connect($host, $port = false, $tval = 30) | |
| { | |
| // Are we already connected? | |
| if ($this->connected) { | |
| return true; | |
| } | |
| //On Windows this will raise a PHP Warning error if the hostname doesn't exist. | |
| //Rather than suppress it with @fsockopen, capture it cleanly instead | |
| set_error_handler([$this, 'catchWarning']); | |
| if (false === $port) { | |
| $port = static::DEFAULT_PORT; | |
| } | |
| // connect to the POP3 server | |
| $this->pop_conn = fsockopen( | |
| $host, // POP3 Host | |
| $port, // Port # | |
| $errno, // Error Number | |
| $errstr, // Error Message | |
| $tval | |
| ); // Timeout (seconds) | |
| // Restore the error handler | |
| restore_error_handler(); | |
| // Did we connect? | |
| if (false === $this->pop_conn) { | |
| // It would appear not... | |
| $this->setError( | |
| "Failed to connect to server $host on port $port. errno: $errno; errstr: $errstr" | |
| ); | |
| return false; | |
| } | |
| // Increase the stream time-out | |
| stream_set_timeout($this->pop_conn, $tval, 0); | |
| // Get the POP3 server response | |
| $pop3_response = $this->getResponse(); | |
| // Check for the +OK | |
| if ($this->checkResponse($pop3_response)) { | |
| // The connection is established and the POP3 server is talking | |
| $this->connected = true; | |
| return true; | |
| } | |
| return false; | |
| } | |
| /** | |
| * Log in to the POP3 server. | |
| * Does not support APOP (RFC 2828, 4949). | |
| * | |
| * @param string $username | |
| * @param string $password | |
| * | |
| * @return bool | |
| */ | |
| public function login($username = '', $password = '') | |
| { | |
| if (!$this->connected) { | |
| $this->setError('Not connected to POP3 server'); | |
| } | |
| if (empty($username)) { | |
| $username = $this->username; | |
| } | |
| if (empty($password)) { | |
| $password = $this->password; | |
| } | |
| // Send the Username | |
| $this->sendString("USER $username" . static::LE); | |
| $pop3_response = $this->getResponse(); | |
| if ($this->checkResponse($pop3_response)) { | |
| // Send the Password | |
| $this->sendString("PASS $password" . static::LE); | |
| $pop3_response = $this->getResponse(); | |
| if ($this->checkResponse($pop3_response)) { | |
| return true; | |
| } | |
| } | |
| return false; | |
| } | |
| /** | |
| * Disconnect from the POP3 server. | |
| */ | |
| public function disconnect() | |
| { | |
| $this->sendString('QUIT'); | |
| //The QUIT command may cause the daemon to exit, which will kill our connection | |
| //So ignore errors here | |
| try { | |
| @fclose($this->pop_conn); | |
| } catch (Exception $e) { | |
| //Do nothing | |
| } | |
| } | |
| /** | |
| * Get a response from the POP3 server. | |
| * | |
| * @param int $size The maximum number of bytes to retrieve | |
| * | |
| * @return string | |
| */ | |
| protected function getResponse($size = 128) | |
| { | |
| $response = fgets($this->pop_conn, $size); | |
| if ($this->do_debug >= 1) { | |
| echo 'Server -> Client: ', $response; | |
| } | |
| return $response; | |
| } | |
| /** | |
| * Send raw data to the POP3 server. | |
| * | |
| * @param string $string | |
| * | |
| * @return int | |
| */ | |
| protected function sendString($string) | |
| { | |
| if ($this->pop_conn) { | |
| if ($this->do_debug >= 2) { //Show client messages when debug >= 2 | |
| echo 'Client -> Server: ', $string; | |
| } | |
| return fwrite($this->pop_conn, $string, strlen($string)); | |
| } | |
| return 0; | |
| } | |
| /** | |
| * Checks the POP3 server response. | |
| * Looks for for +OK or -ERR. | |
| * | |
| * @param string $string | |
| * | |
| * @return bool | |
| */ | |
| protected function checkResponse($string) | |
| { | |
| if (substr($string, 0, 3) !== '+OK') { | |
| $this->setError("Server reported an error: $string"); | |
| return false; | |
| } | |
| return true; | |
| } | |
| /** | |
| * Add an error to the internal error store. | |
| * Also display debug output if it's enabled. | |
| * | |
| * @param string $error | |
| */ | |
| protected function setError($error) | |
| { | |
| $this->errors[] = $error; | |
| if ($this->do_debug >= 1) { | |
| echo '<pre>'; | |
| foreach ($this->errors as $e) { | |
| print_r($e); | |
| } | |
| echo '</pre>'; | |
| } | |
| } | |
| /** | |
| * Get an array of error messages, if any. | |
| * | |
| * @return array | |
| */ | |
| public function getErrors() | |
| { | |
| return $this->errors; | |
| } | |
| /** | |
| * POP3 connection error handler. | |
| * | |
| * @param int $errno | |
| * @param string $errstr | |
| * @param string $errfile | |
| * @param int $errline | |
| */ | |
| protected function catchWarning($errno, $errstr, $errfile, $errline) | |
| { | |
| $this->setError( | |
| 'Connecting to the POP3 server raised a PHP warning:' . | |
| "errno: $errno errstr: $errstr; errfile: $errfile; errline: $errline" | |
| ); | |
| } | |
| } |