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448 lines
13 KiB
PHP
448 lines
13 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Mail
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* @subpackage Storage
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* @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id: Mbox.php 24593 2012-01-05 20:35:02Z matthew $
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*/
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/**
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* @see Zend_Loader
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* May be used in constructor, but commented out for now
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*/
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// require_once 'Zend/Loader.php';
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/**
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* @see Zend_Mail_Storage_Abstract
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*/
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require_once 'Zend/Mail/Storage/Abstract.php';
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/**
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* @see Zend_Mail_Message_File
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*/
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require_once 'Zend/Mail/Message/File.php';
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/**
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* @category Zend
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* @package Zend_Mail
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* @subpackage Storage
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* @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Mail_Storage_Mbox extends Zend_Mail_Storage_Abstract
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{
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/**
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* file handle to mbox file
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* @var null|resource
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*/
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protected $_fh;
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/**
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* filename of mbox file for __wakeup
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* @var string
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*/
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protected $_filename;
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/**
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* modification date of mbox file for __wakeup
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* @var int
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*/
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protected $_filemtime;
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/**
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* start and end position of messages as array('start' => start, 'seperator' => headersep, 'end' => end)
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* @var array
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*/
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protected $_positions;
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/**
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* used message class, change it in an extened class to extend the returned message class
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* @var string
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*/
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protected $_messageClass = 'Zend_Mail_Message_File';
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/**
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* Count messages all messages in current box
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*
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* @return int number of messages
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* @throws Zend_Mail_Storage_Exception
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*/
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public function countMessages()
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{
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return count($this->_positions);
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}
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/**
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* Get a list of messages with number and size
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*
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* @param int|null $id number of message or null for all messages
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* @return int|array size of given message of list with all messages as array(num => size)
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*/
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public function getSize($id = 0)
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{
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if ($id) {
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$pos = $this->_positions[$id - 1];
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return $pos['end'] - $pos['start'];
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}
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$result = array();
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foreach ($this->_positions as $num => $pos) {
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$result[$num + 1] = $pos['end'] - $pos['start'];
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}
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return $result;
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}
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/**
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* Get positions for mail message or throw exeption if id is invalid
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*
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* @param int $id number of message
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* @return array positions as in _positions
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* @throws Zend_Mail_Storage_Exception
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*/
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protected function _getPos($id)
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{
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if (!isset($this->_positions[$id - 1])) {
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/**
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* @see Zend_Mail_Storage_Exception
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*/
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require_once 'Zend/Mail/Storage/Exception.php';
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throw new Zend_Mail_Storage_Exception('id does not exist');
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}
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return $this->_positions[$id - 1];
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}
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/**
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* Fetch a message
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*
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* @param int $id number of message
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* @return Zend_Mail_Message_File
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* @throws Zend_Mail_Storage_Exception
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*/
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public function getMessage($id)
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{
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// TODO that's ugly, would be better to let the message class decide
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if (strtolower($this->_messageClass) == 'zend_mail_message_file' || is_subclass_of($this->_messageClass, 'zend_mail_message_file')) {
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// TODO top/body lines
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$messagePos = $this->_getPos($id);
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return new $this->_messageClass(array('file' => $this->_fh, 'startPos' => $messagePos['start'],
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'endPos' => $messagePos['end']));
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}
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$bodyLines = 0; // TODO: need a way to change that
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$message = $this->getRawHeader($id);
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// file pointer is after headers now
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if ($bodyLines) {
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$message .= "\n";
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while ($bodyLines-- && ftell($this->_fh) < $this->_positions[$id - 1]['end']) {
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$message .= fgets($this->_fh);
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}
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}
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return new $this->_messageClass(array('handler' => $this, 'id' => $id, 'headers' => $message));
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}
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/*
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* Get raw header of message or part
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*
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* @param int $id number of message
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* @param null|array|string $part path to part or null for messsage header
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* @param int $topLines include this many lines with header (after an empty line)
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* @return string raw header
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* @throws Zend_Mail_Protocol_Exception
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* @throws Zend_Mail_Storage_Exception
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*/
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public function getRawHeader($id, $part = null, $topLines = 0)
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{
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if ($part !== null) {
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// TODO: implement
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/**
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* @see Zend_Mail_Storage_Exception
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*/
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require_once 'Zend/Mail/Storage/Exception.php';
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throw new Zend_Mail_Storage_Exception('not implemented');
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}
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$messagePos = $this->_getPos($id);
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// TODO: toplines
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return stream_get_contents($this->_fh, $messagePos['separator'] - $messagePos['start'], $messagePos['start']);
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}
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/*
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* Get raw content of message or part
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*
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* @param int $id number of message
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* @param null|array|string $part path to part or null for messsage content
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* @return string raw content
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* @throws Zend_Mail_Protocol_Exception
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* @throws Zend_Mail_Storage_Exception
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*/
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public function getRawContent($id, $part = null)
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{
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if ($part !== null) {
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// TODO: implement
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/**
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* @see Zend_Mail_Storage_Exception
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*/
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require_once 'Zend/Mail/Storage/Exception.php';
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throw new Zend_Mail_Storage_Exception('not implemented');
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}
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$messagePos = $this->_getPos($id);
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return stream_get_contents($this->_fh, $messagePos['end'] - $messagePos['separator'], $messagePos['separator']);
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}
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/**
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* Create instance with parameters
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* Supported parameters are:
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* - filename filename of mbox file
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*
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* @param array $params mail reader specific parameters
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* @throws Zend_Mail_Storage_Exception
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*/
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public function __construct($params)
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{
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if (is_array($params)) {
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$params = (object)$params;
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}
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if (!isset($params->filename) /* || Zend_Loader::isReadable($params['filename']) */) {
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/**
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* @see Zend_Mail_Storage_Exception
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*/
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require_once 'Zend/Mail/Storage/Exception.php';
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throw new Zend_Mail_Storage_Exception('no valid filename given in params');
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}
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$this->_openMboxFile($params->filename);
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$this->_has['top'] = true;
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$this->_has['uniqueid'] = false;
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}
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/**
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* check if given file is a mbox file
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*
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* if $file is a resource its file pointer is moved after the first line
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*
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* @param resource|string $file stream resource of name of file
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* @param bool $fileIsString file is string or resource
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* @return bool file is mbox file
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*/
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protected function _isMboxFile($file, $fileIsString = true)
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{
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if ($fileIsString) {
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$file = @fopen($file, 'r');
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if (!$file) {
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return false;
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}
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} else {
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fseek($file, 0);
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}
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$result = false;
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$line = fgets($file);
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if (strpos($line, 'From ') === 0) {
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$result = true;
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}
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if ($fileIsString) {
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@fclose($file);
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}
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return $result;
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}
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/**
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* open given file as current mbox file
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*
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* @param string $filename filename of mbox file
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* @return null
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* @throws Zend_Mail_Storage_Exception
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*/
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protected function _openMboxFile($filename)
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{
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if ($this->_fh) {
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$this->close();
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}
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$this->_fh = @fopen($filename, 'r');
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if (!$this->_fh) {
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/**
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* @see Zend_Mail_Storage_Exception
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*/
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require_once 'Zend/Mail/Storage/Exception.php';
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throw new Zend_Mail_Storage_Exception('cannot open mbox file');
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}
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$this->_filename = $filename;
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$this->_filemtime = filemtime($this->_filename);
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if (!$this->_isMboxFile($this->_fh, false)) {
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@fclose($this->_fh);
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/**
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* @see Zend_Mail_Storage_Exception
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*/
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require_once 'Zend/Mail/Storage/Exception.php';
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throw new Zend_Mail_Storage_Exception('file is not a valid mbox format');
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}
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$messagePos = array('start' => ftell($this->_fh), 'separator' => 0, 'end' => 0);
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while (($line = fgets($this->_fh)) !== false) {
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if (strpos($line, 'From ') === 0) {
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$messagePos['end'] = ftell($this->_fh) - strlen($line) - 2; // + newline
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if (!$messagePos['separator']) {
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$messagePos['separator'] = $messagePos['end'];
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}
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$this->_positions[] = $messagePos;
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$messagePos = array('start' => ftell($this->_fh), 'separator' => 0, 'end' => 0);
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}
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if (!$messagePos['separator'] && !trim($line)) {
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$messagePos['separator'] = ftell($this->_fh);
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}
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}
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$messagePos['end'] = ftell($this->_fh);
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if (!$messagePos['separator']) {
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$messagePos['separator'] = $messagePos['end'];
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}
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$this->_positions[] = $messagePos;
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}
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/**
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* Close resource for mail lib. If you need to control, when the resource
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* is closed. Otherwise the destructor would call this.
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*
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* @return void
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*/
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public function close()
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{
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@fclose($this->_fh);
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$this->_positions = array();
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}
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/**
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* Waste some CPU cycles doing nothing.
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*
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* @return void
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*/
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public function noop()
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{
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return true;
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}
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/**
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* stub for not supported message deletion
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*
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* @return null
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* @throws Zend_Mail_Storage_Exception
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*/
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public function removeMessage($id)
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{
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/**
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* @see Zend_Mail_Storage_Exception
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*/
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require_once 'Zend/Mail/Storage/Exception.php';
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throw new Zend_Mail_Storage_Exception('mbox is read-only');
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}
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/**
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* get unique id for one or all messages
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*
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* Mbox does not support unique ids (yet) - it's always the same as the message number.
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* That shouldn't be a problem, because we can't change mbox files. Therefor the message
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* number is save enough.
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*
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* @param int|null $id message number
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* @return array|string message number for given message or all messages as array
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* @throws Zend_Mail_Storage_Exception
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*/
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public function getUniqueId($id = null)
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{
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if ($id) {
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// check if id exists
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$this->_getPos($id);
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return $id;
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}
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$range = range(1, $this->countMessages());
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return array_combine($range, $range);
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}
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/**
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* get a message number from a unique id
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*
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* I.e. if you have a webmailer that supports deleting messages you should use unique ids
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* as parameter and use this method to translate it to message number right before calling removeMessage()
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*
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* @param string $id unique id
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* @return int message number
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* @throws Zend_Mail_Storage_Exception
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*/
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public function getNumberByUniqueId($id)
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{
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// check if id exists
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$this->_getPos($id);
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return $id;
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}
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/**
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* magic method for serialize()
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*
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* with this method you can cache the mbox class
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*
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* @return array name of variables
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*/
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public function __sleep()
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{
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return array('_filename', '_positions', '_filemtime');
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}
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/**
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* magic method for unserialize()
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*
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* with this method you can cache the mbox class
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* for cache validation the mtime of the mbox file is used
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*
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* @return null
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* @throws Zend_Mail_Storage_Exception
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*/
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public function __wakeup()
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{
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if ($this->_filemtime != @filemtime($this->_filename)) {
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$this->close();
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$this->_openMboxFile($this->_filename);
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} else {
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$this->_fh = @fopen($this->_filename, 'r');
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if (!$this->_fh) {
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/**
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* @see Zend_Mail_Storage_Exception
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*/
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require_once 'Zend/Mail/Storage/Exception.php';
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throw new Zend_Mail_Storage_Exception('cannot open mbox file');
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}
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}
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}
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}
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