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[bus.git] / busui / owa / includes / PHPMailer_v2.0.3 / class.pop3.php
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  <?php
  /*~ class.pop3.php
  .---------------------------------------------------------------------------.
  | Software: PHPMailer - PHP email class |
  | Version: 2.0.3 |
  | Contact: via sourceforge.net support pages (also www.codeworxtech.com) |
  | Info: http://phpmailer.sourceforge.net |
  | Support: http://sourceforge.net/projects/phpmailer/ |
  | ------------------------------------------------------------------------- |
  | Author: Andy Prevost (project admininistrator) |
  | Author: Brent R. Matzelle (original founder) |
  | Copyright (c) 2004-2007, Andy Prevost. All Rights Reserved. |
  | Copyright (c) 2001-2003, Brent R. Matzelle |
  | ------------------------------------------------------------------------- |
  | License: Distributed under the Lesser General Public License (LGPL) |
  | http://www.gnu.org/copyleft/lesser.html |
  | 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. |
  | ------------------------------------------------------------------------- |
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  '---------------------------------------------------------------------------'
   
  /**
  * POP Before SMTP Authentication Class
  *
  * Author: Richard Davey (rich@corephp.co.uk)
  * License: LGPL, see PHPMailer License
  *
  * Specifically for PHPMailer to allow POP before SMTP authentication.
  * Does not yet work with APOP - if you have an APOP account, contact me
  * and we can test changes to this script.
  *
  * This class is based on the structure of the SMTP class by Chris Ryan
  *
  * This class is rfc 1939 compliant and implements all the commands
  * required for POP3 connection, authentication and disconnection.
  *
  * @package PHPMailer
  * @author Richard Davey
  */
   
  class POP3
  {
  /**
  * Default POP3 port
  * @var int
  */
  var $POP3_PORT = 110;
   
  /**
  * Default Timeout
  * @var int
  */
  var $POP3_TIMEOUT = 30;
   
  /**
  * POP3 Carriage Return + Line Feed
  * @var string
  */
  var $CRLF = "\r\n";
   
  /**
  * Displaying Debug warnings? (0 = now, 1+ = yes)
  * @var int
  */
  var $do_debug = 2;
   
  /**
  * POP3 Mail Server
  * @var string
  */
  var $host;
   
  /**
  * POP3 Port
  * @var int
  */
  var $port;
   
  /**
  * POP3 Timeout Value
  * @var int
  */
  var $tval;
   
  /**
  * POP3 Username
  * @var string
  */
  var $username;
   
  /**
  * POP3 Password
  * @var string
  */
  var $password;
   
  /**#@+
  * @access private
  */
  var $pop_conn;
  var $connected;
  var $error; // Error log array
  /**#@-*/
   
  /**
  * Constructor, sets the initial values
  *
  * @return POP3
  */
  function POP3 ()
  {
  $this->pop_conn = 0;
  $this->connected = false;
  $this->error = null;
  }
   
  /**
  * Combination of public events - connect, login, disconnect
  *
  * @param string $host
  * @param integer $port
  * @param integer $tval
  * @param string $username
  * @param string $password
  */
  function Authorise ($host, $port = false, $tval = false, $username, $password, $debug_level = 0)
  {
  $this->host = $host;
   
  // If no port value is passed, retrieve it
  if ($port == false)
  {
  $this->port = $this->POP3_PORT;
  }
  else
  {
  $this->port = $port;
  }
   
  // If no port value is passed, retrieve it
  if ($tval == false)
  {
  $this->tval = $this->POP3_TIMEOUT;
  }
  else
  {
  $this->tval = $tval;
  }
   
  $this->do_debug = $debug_level;
  $this->username = $username;
  $this->password = $password;
   
  // Refresh the error log
  $this->error = null;
   
  // 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 if the login succeeded
  $this->Disconnect();
   
  return false;
  }
   
  /**
  * Connect to the POP3 server
  *
  * @param string $host
  * @param integer $port
  * @param integer $tval
  * @return boolean
  */
  function Connect ($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 supress it with @fsockopen, let's capture it cleanly instead
  */
   
  set_error_handler(array(&$this, 'catchWarning'));
   
  // 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();
   
  // Does the Error Log now contain anything?
  if ($this->error && $this->do_debug >= 1)
  {
  $this->displayErrors();
  }
   
  // Did we connect?
  if ($this->pop_conn == false)
  {
  // It would appear not...
  $this->error = array(
  'error' => "Failed to connect to server $host on port $port",
  'errno' => $errno,
  'errstr' => $errstr
  );
   
  if ($this->do_debug >= 1)
  {
  $this->displayErrors();
  }
   
  return false;
  }
   
  // Increase the stream time-out
   
  // Check for PHP 4.3.0 or later
  if (version_compare(phpversion(), '4.3.0', 'ge'))
  {
  stream_set_timeout($this->pop_conn, $tval, 0);
  }
  else
  {
  // Does not work on Windows
  if (substr(PHP_OS, 0, 3) !== 'WIN')
  {
  socket_set_timeout($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;
  }
   
  }
   
  /**
  * Login to the POP3 server (does not support APOP yet)
  *
  * @param string $username
  * @param string $password
  * @return boolean
  */
  function Login ($username = '', $password = '')
  {
  if ($this->connected == false)
  {
  $this->error = 'Not connected to POP3 server';
   
  if ($this->do_debug >= 1)
  {
  $this->displayErrors();
  }
  }
   
  if (empty($username))
  {
  $username = $this->username;
  }
   
  if (empty($password))
  {
  $password = $this->password;
  }
   
  $pop_username = "USER $username" . $this->CRLF;
  $pop_password = "PASS $password" . $this->CRLF;
   
  // Send the Username
  $this->sendString($pop_username);
  $pop3_response = $this->getResponse();
   
  if ($this->checkResponse($pop3_response))
  {
  // Send the Password
  $this->sendString($pop_password);
  $pop3_response = $this->getResponse();
   
  if ($this->checkResponse($pop3_response))
  {
  return true;
  }
  else
  {
  return false;
  }
  }
  else
  {
  return false;
  }
  }
   
  /**
  * Disconnect from the POP3 server
  */
  function Disconnect ()
  {
  $this->sendString('QUIT');
   
  fclose($this->pop_conn);
  }
   
  /*
  ---------------
  Private Methods
  ---------------
  */
   
  /**
  * Get the socket response back.
  * $size is the maximum number of bytes to retrieve
  *
  * @param integer $size
  * @return string
  */
  function getResponse ($size = 128)
  {
  $pop3_response = fgets($this->pop_conn, $size);
   
  return $pop3_response;
  }
   
  /**
  * Send a string down the open socket connection to the POP3 server
  *
  * @param string $string
  * @return integer
  */
  function sendString ($string)
  {
  $bytes_sent = fwrite($this->pop_conn, $string, strlen($string));
   
  return $bytes_sent;
   
  }
   
  /**
  * Checks the POP3 server response for +OK or -ERR
  *
  * @param string $string
  * @return boolean
  */
  function checkResponse ($string)
  {
  if (substr($string, 0, 3) !== '+OK')
  {
  $this->error = array(
  'error' => "Server reported an error: $string",
  'errno' => 0,
  'errstr' => ''
  );
   
  if ($this->do_debug >= 1)
  {
  $this->displayErrors();
  }
   
  return false;
  }
  else
  {
  return true;
  }
   
  }