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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Mail
* @subpackage Storage
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Mbox.php 18951 2009-11-12 16:26:19Z alexander $
*/
/**
* @see Zend_Loader
* May be used in constructor, but commented out for now
*/
// require_once 'Zend/Loader.php';
/**
* @see Zend_Mail_Storage_Abstract
*/
require_once 'Zend/Mail/Storage/Abstract.php';
/**
* @see Zend_Mail_Message_File
*/
require_once 'Zend/Mail/Message/File.php';
/**
* @category Zend
* @package Zend_Mail
* @subpackage Storage
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Mail_Storage_Mbox extends Zend_Mail_Storage_Abstract
{
/**
* file handle to mbox file
* @var null|resource
*/
protected $_fh;
/**
* filename of mbox file for __wakeup
* @var string
*/
protected $_filename;
/**
* modification date of mbox file for __wakeup
* @var int
*/
protected $_filemtime;
/**
* start and end position of messages as array('start' => start, 'seperator' => headersep, 'end' => end)
* @var array
*/
protected $_positions;
/**
* used message class, change it in an extened class to extend the returned message class
* @var string
*/
protected $_messageClass = 'Zend_Mail_Message_File';
/**
* Count messages all messages in current box
*
* @return int number of messages
* @throws Zend_Mail_Storage_Exception
*/
public function countMessages()
{
return count($this->_positions);
}
/**
* Get a list of messages with number and size
*
* @param int|null $id number of message or null for all messages
* @return int|array size of given message of list with all messages as array(num => size)
*/
public function getSize($id = 0)
{
if ($id) {
$pos = $this->_positions[$id - 1];
return $pos['end'] - $pos['start'];
}
$result = array();
foreach ($this->_positions as $num => $pos) {
$result[$num + 1] = $pos['end'] - $pos['start'];
}
return $result;
}
/**
* Get positions for mail message or throw exeption if id is invalid
*
* @param int $id number of message
* @return array positions as in _positions
* @throws Zend_Mail_Storage_Exception
*/
protected function _getPos($id)
{
if (!isset($this->_positions[$id - 1])) {
/**
* @see Zend_Mail_Storage_Exception
*/
require_once 'Zend/Mail/Storage/Exception.php';
throw new Zend_Mail_Storage_Exception('id does not exist');
}
return $this->_positions[$id - 1];
}
/**
* Fetch a message
*
* @param int $id number of message
* @return Zend_Mail_Message_File
* @throws Zend_Mail_Storage_Exception
*/
public function getMessage($id)
{
// TODO that's ugly, would be better to let the message class decide
if (strtolower($this->_messageClass) == 'zend_mail_message_file' || is_subclass_of($this->_messageClass, 'zend_mail_message_file')) {
// TODO top/body lines
$messagePos = $this->_getPos($id);
return new $this->_messageClass(array('file' => $this->_fh, 'startPos' => $messagePos['start'],
'endPos' => $messagePos['end']));
}
$bodyLines = 0; // TODO: need a way to change that
$message = $this->getRawHeader($id);
// file pointer is after headers now
if ($bodyLines) {
$message .= "\n";
while ($bodyLines-- && ftell($this->_fh) < $this->_positions[$id - 1]['end']) {
$message .= fgets($this->_fh);
}
}
return new $this->_messageClass(array('handler' => $this, 'id' => $id, 'headers' => $message));
}
/*
* Get raw header of message or part
*
* @param int $id number of message
* @param null|array|string $part path to part or null for messsage header
* @param int $topLines include this many lines with header (after an empty line)
* @return string raw header
* @throws Zend_Mail_Protocol_Exception
* @throws Zend_Mail_Storage_Exception
*/
public function getRawHeader($id, $part = null, $topLines = 0)
{
if ($part !== null) {
// TODO: implement
/**
* @see Zend_Mail_Storage_Exception
*/
require_once 'Zend/Mail/Storage/Exception.php';
throw new Zend_Mail_Storage_Exception('not implemented');
}
$messagePos = $this->_getPos($id);
// TODO: toplines
return stream_get_contents($this->_fh, $messagePos['separator'] - $messagePos['start'], $messagePos['start']);
}
/*
* Get raw content of message or part
*
* @param int $id number of message
* @param null|array|string $part path to part or null for messsage content
* @return string raw content
* @throws Zend_Mail_Protocol_Exception
* @throws Zend_Mail_Storage_Exception
*/
public function getRawContent($id, $part = null)
{
if ($part !== null) {
// TODO: implement
/**
* @see Zend_Mail_Storage_Exception
*/
require_once 'Zend/Mail/Storage/Exception.php';
throw new Zend_Mail_Storage_Exception('not implemented');
}
$messagePos = $this->_getPos($id);
return stream_get_contents($this->_fh, $messagePos['end'] - $messagePos['separator'], $messagePos['separator']);
}
/**
* Create instance with parameters
* Supported parameters are:
* - filename filename of mbox file
*
* @param $params array mail reader specific parameters
* @throws Zend_Mail_Storage_Exception
*/
public function __construct($params)
{
if (is_array($params)) {
$params = (object)$params;
}
if (!isset($params->filename) /* || Zend_Loader::isReadable($params['filename']) */) {
/**
* @see Zend_Mail_Storage_Exception
*/
require_once 'Zend/Mail/Storage/Exception.php';
throw new Zend_Mail_Storage_Exception('no valid filename given in params');
}
$this->_openMboxFile($params->filename);
$this->_has['top'] = true;
$this->_has['uniqueid'] = false;
}
/**
* check if given file is a mbox file
*
* if $file is a resource its file pointer is moved after the first line
*
* @param resource|string $file stream resource of name of file
* @param bool $fileIsString file is string or resource
* @return bool file is mbox file
*/
protected function _isMboxFile($file, $fileIsString = true)
{
if ($fileIsString) {
$file = @fopen($file, 'r');
if (!$file) {
return false;
}
} else {
fseek($file, 0);
}
$result = false;
$line = fgets($file);
if (strpos($line, 'From ') === 0) {
$result = true;
}
if ($fileIsString) {
@fclose($file);
}
return $result;
}
/**
* open given file as current mbox file
*
* @param string $filename filename of mbox file
* @return null
* @throws Zend_Mail_Storage_Exception
*/
protected function _openMboxFile($filename)
{
if ($this->_fh) {
$this->close();
}
$this->_fh = @fopen($filename, 'r');
if (!$this->_fh) {
/**
* @see Zend_Mail_Storage_Exception
*/
require_once 'Zend/Mail/Storage/Exception.php';
throw new Zend_Mail_Storage_Exception('cannot open mbox file');
}
$this->_filename = $filename;
$this->_filemtime = filemtime($this->_filename);
if (!$this->_isMboxFile($this->_fh, false)) {
@fclose($this->_fh);
/**
* @see Zend_Mail_Storage_Exception
*/
require_once 'Zend/Mail/Storage/Exception.php';
throw new Zend_Mail_Storage_Exception('file is not a valid mbox format');
}
$messagePos = array('start' => ftell($this->_fh), 'separator' => 0, 'end' => 0);
while (($line = fgets($this->_fh)) !== false) {
if (strpos($line, 'From ') === 0) {
$messagePos['end'] = ftell($this->_fh) - strlen($line) - 2; // + newline
if (!$messagePos['separator']) {
$messagePos['separator'] = $messagePos['end'];
}
$this->_positions[] = $messagePos;
$messagePos = array('start' => ftell($this->_fh), 'separator' => 0, 'end' => 0);
}
if (!$messagePos['separator'] && !trim($line)) {
$messagePos['separator'] = ftell($this->_fh);
}
}
$messagePos['end'] = ftell($this->_fh);
if (!$messagePos['separator']) {
$messagePos['separator'] = $messagePos['end'];
}
$this->_positions[] = $messagePos;
}
/**
* Close resource for mail lib. If you need to control, when the resource
* is closed. Otherwise the destructor would call this.
*
* @return void
*/
public function close()
{
@fclose($this->_fh);
$this->_positions = array();
}
/**
* Waste some CPU cycles doing nothing.
*
* @return void
*/
public function noop()
{
return true;
}
/**
* stub for not supported message deletion
*
* @return null
* @throws Zend_Mail_Storage_Exception
*/
public function removeMessage($id)
{
/**
* @see Zend_Mail_Storage_Exception
*/
require_once 'Zend/Mail/Storage/Exception.php';
throw new Zend_Mail_Storage_Exception('mbox is read-only');
}
/**
* get unique id for one or all messages
*
* Mbox does not support unique ids (yet) - it's always the same as the message number.
* That shouldn't be a problem, because we can't change mbox files. Therefor the message
* number is save enough.
*
* @param int|null $id message number
* @return array|string message number for given message or all messages as array
* @throws Zend_Mail_Storage_Exception
*/
public function getUniqueId($id = null)
{
if ($id) {
// check if id exists
$this->_getPos($id);
return $id;
}
$range = range(1, $this->countMessages());
return array_combine($range, $range);
}
/**
* get a message number from a unique id
*
* I.e. if you have a webmailer that supports deleting messages you should use unique ids
* as parameter and use this method to translate it to message number right before calling removeMessage()
*
* @param string $id unique id
* @return int message number
* @throws Zend_Mail_Storage_Exception
*/
public function getNumberByUniqueId($id)
{
// check if id exists
$this->_getPos($id);
return $id;
}
/**
* magic method for serialize()
*
* with this method you can cache the mbox class
*
* @return array name of variables
*/
public function __sleep()
{
return array('_filename', '_positions', '_filemtime');
}
/**
* magic method for unserialize()
*
* with this method you can cache the mbox class
* for cache validation the mtime of the mbox file is used
*
* @return null
* @throws Zend_Mail_Storage_Exception
*/
public function __wakeup()
{
if ($this->_filemtime != @filemtime($this->_filename)) {
$this->close();
$this->_openMboxFile($this->_filename);
} else {
$this->_fh = @fopen($this->_filename, 'r');
if (!$this->_fh) {
/**
* @see Zend_Mail_Storage_Exception
*/
require_once 'Zend/Mail/Storage/Exception.php';
throw new Zend_Mail_Storage_Exception('cannot open mbox file');
}
}
}
}
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