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<?php |
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/* |
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* This file is part of SwiftMailer. |
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* (c) 2004-2009 Chris Corbyn |
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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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/** |
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* Makes sure a connection to a POP3 host has been established prior to connecting to SMTP. |
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* |
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* @author Chris Corbyn |
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*/ |
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class Swift_Plugins_PopBeforeSmtpPlugin implements Swift_Events_TransportChangeListener, Swift_Plugins_Pop_Pop3Connection |
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{ |
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/** |
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* A delegate connection to use (mostly a test hook) |
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* |
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* @var Swift_Plugins_Pop_Pop3Connection |
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*/ |
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private $_connection; |
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/** |
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* Hostname of the POP3 server |
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* |
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* @var string |
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*/ |
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private $_host; |
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/** |
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* Port number to connect on |
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* |
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* @var int |
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*/ |
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private $_port; |
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/** |
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* Encryption type to use (if any) |
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* |
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* @var null|string |
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*/ |
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private $_crypto; |
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/** |
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* Username to use (if any) |
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* |
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* @var string |
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*/ |
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private $_username; |
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/** |
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* Password to use (if any) |
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* |
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* @var string |
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*/ |
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private $_password; |
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/** |
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* Established connection via TCP socket |
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* |
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* @var resource |
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*/ |
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private $_socket; |
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/** |
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* Connect timeout in seconds |
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* |
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* @var int |
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*/ |
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private $_timeout = 10; |
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/** |
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* SMTP Transport to bind to |
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* |
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* @var Swift_Transport |
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*/ |
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private $_transport; |
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/** |
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* Create a new PopBeforeSmtpPlugin for $host and $port. |
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* |
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* @param string $host |
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* @param int $port |
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* @param string $crypto as "tls" or "ssl" |
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*/ |
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public function __construct($host, $port = 110, $crypto = null) |
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{ |
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$this->_host = $host; |
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$this->_port = $port; |
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$this->_crypto = $crypto; |
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} |
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/** |
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* Create a new PopBeforeSmtpPlugin for $host and $port. |
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* |
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* @param string $host |
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* @param int $port |
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* @param string $crypto as "tls" or "ssl" |
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* |
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* @return self |
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*/ |
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public static function newInstance($host, $port = 110, $crypto = null) |
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{ |
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return new self($host, $port, $crypto); |
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} |
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/** |
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* Set a Pop3Connection to delegate to instead of connecting directly. |
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* |
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* @param Swift_Plugins_Pop_Pop3Connection $connection |
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* |
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* @return $this |
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*/ |
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public function setConnection(Swift_Plugins_Pop_Pop3Connection $connection) |
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{ |
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$this->_connection = $connection; |
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return $this; |
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} |
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/** |
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* Bind this plugin to a specific SMTP transport instance. |
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* |
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* @param Swift_Transport |
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*/ |
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public function bindSmtp(Swift_Transport $smtp) |
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{ |
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$this->_transport = $smtp; |
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} |
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/** |
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* Set the connection timeout in seconds (default 10). |
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* |
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* @param int $timeout |
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* |
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* @return $this |
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*/ |
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public function setTimeout($timeout) |
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{ |
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$this->_timeout = (int)$timeout; |
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return $this; |
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} |
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/** |
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* Set the username to use when connecting (if needed). |
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* |
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* @param string $username |
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* |
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* @return $this |
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*/ |
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public function setUsername($username) |
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{ |
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$this->_username = $username; |
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return $this; |
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} |
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/** |
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* Set the password to use when connecting (if needed). |
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* |
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* @param string $password |
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* |
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* @return $this |
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*/ |
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public function setPassword($password) |
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{ |
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$this->_password = $password; |
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return $this; |
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} |
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/** |
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* Connect to the POP3 host and authenticate. |
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* |
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* @throws Swift_Plugins_Pop_Pop3Exception if connection fails |
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*/ |
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public function connect() |
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{ |
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if (isset($this->_connection)) { |
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$this->_connection->connect(); |
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} else { |
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if (!isset($this->_socket)) { |
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if (!$socket = fsockopen( |
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$this->_getHostString(), $this->_port, $errno, $errstr, $this->_timeout |
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) |
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) { |
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throw new Swift_Plugins_Pop_Pop3Exception( |
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sprintf('Failed to connect to POP3 host [%s]: %s', $this->_host, $errstr) |
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); |
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} |
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$this->_socket = $socket; |
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if (false === $greeting = fgets($this->_socket)) { |
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throw new Swift_Plugins_Pop_Pop3Exception( |
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sprintf('Failed to connect to POP3 host [%s]', trim($greeting)) |
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); |
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} |
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$this->_assertOk($greeting); |
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if ($this->_username) { |
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$this->_command(sprintf("USER %s\r\n", $this->_username)); |
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$this->_command(sprintf("PASS %s\r\n", $this->_password)); |
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} |
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} |
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} |
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} |
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/** |
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* Disconnect from the POP3 host. |
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*/ |
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public function disconnect() |
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{ |
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if (isset($this->_connection)) { |
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$this->_connection->disconnect(); |
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} else { |
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$this->_command("QUIT\r\n"); |
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if (!fclose($this->_socket)) { |
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throw new Swift_Plugins_Pop_Pop3Exception( |
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sprintf('POP3 host [%s] connection could not be stopped', $this->_host) |
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); |
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} |
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$this->_socket = null; |
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} |
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} |
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/** |
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* Invoked just before a Transport is started. |
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* |
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* @param Swift_Events_TransportChangeEvent $evt |
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*/ |
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public function beforeTransportStarted(Swift_Events_TransportChangeEvent $evt) |
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{ |
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if ( |
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isset($this->_transport) |
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&& |
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$this->_transport !== $evt->getTransport() |
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) { |
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return; |
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} |
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$this->connect(); |
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$this->disconnect(); |
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} |
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/** |
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* Not used. |
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* |
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* @param Swift_Events_TransportChangeEvent $evt |
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*/ |
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public function transportStarted(Swift_Events_TransportChangeEvent $evt) |
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{ |
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} |
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/** |
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* Not used. |
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* |
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* @param Swift_Events_TransportChangeEvent $evt |
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*/ |
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public function beforeTransportStopped(Swift_Events_TransportChangeEvent $evt) |
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{ |
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} |
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/** |
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* Not used. |
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* |
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* @param Swift_Events_TransportChangeEvent $evt |
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*/ |
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public function transportStopped(Swift_Events_TransportChangeEvent $evt) |
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{ |
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} |
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private function _command($command) |
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{ |
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if (!fwrite($this->_socket, $command)) { |
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throw new Swift_Plugins_Pop_Pop3Exception( |
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sprintf('Failed to write command [%s] to POP3 host', trim($command)) |
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); |
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} |
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if (false === $response = fgets($this->_socket)) { |
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throw new Swift_Plugins_Pop_Pop3Exception( |
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sprintf('Failed to read from POP3 host after command [%s]', trim($command)) |
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); |
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} |
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$this->_assertOk($response); |
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return $response; |
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} |
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private function _assertOk($response) |
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{ |
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if (0 !== strpos($response, '+OK')) { |
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throw new Swift_Plugins_Pop_Pop3Exception( |
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sprintf('POP3 command failed [%s]', trim($response)) |
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); |
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} |
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} |
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private function _getHostString() |
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{ |
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$host = $this->_host; |
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switch (Swift::strtolowerWithStaticCache($this->_crypto)) { |
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case 'ssl': |
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$host = 'ssl://' . $host; |
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break; |
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case 'tls': |
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$host = 'tls://' . $host; |
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break; |
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} |
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return $host; |
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} |
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} |
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You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.