mirror of
https://github.com/cytopia/devilbox.git
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912 lines
24 KiB
PHP
912 lines
24 KiB
PHP
<?php
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/**
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* @author cytopia
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* @date 2016-11-06
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*
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* Fixed constructor name to __construct in order to be
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* compatible with PHP >5.5
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*/
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/**
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* Class to read mbox mail files.
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*
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* PHP versions 4 and 5
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*
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* @category Mail
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* @package Mail_Mbox
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* @author Roberto Berto <darkelder@php.net>
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* @author Christian Weiske <cweiske@php.net>
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
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* @version CVS: $Id: Mbox.php 290486 2009-11-10 20:42:51Z cweiske $
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* @link http://pear.php.net/package/Mail_Mbox
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*/
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require_once 'PEAR.php';
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/**
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* The file has been modified since it has been opened.
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* You should close and re-open it.
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*/
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define('MAIL_MBOX_ERROR_MODIFIED', 2101);
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/**
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* The mail mbox file doesn't exist.
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*/
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define('MAIL_MBOX_ERROR_FILE_NOT_EXISTING', 2102);
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/**
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* There is no message with the given number.
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*/
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define('MAIL_MBOX_ERROR_MESSAGE_NOT_EXISTING', 2103);
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/**
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* No permission to access the file.
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*/
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define('MAIL_MBOX_ERROR_NO_PERMISSION', 2104);
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/**
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* The file cannot be opened.
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*/
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define('MAIL_MBOX_ERROR_CANNOT_OPEN', 2105);
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/**
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* The file cannot be closed due to some strange things.
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*/
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define('MAIL_MBOX_ERROR_CANNOT_CLOSE', 2106);
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/**
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* The file cannot be read.
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*/
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define('MAIL_MBOX_ERROR_CANNOT_READ', 2107);
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/**
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* Failed to create a temporary file.
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*/
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define('MAIL_MBOX_ERROR_CANNOT_CREATE_TMP', 2108);
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/**
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* The file cannot be written.
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*/
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define('MAIL_MBOX_ERROR_CANNOT_WRITE', 2109);
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/**
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* The file is not open.
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*/
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define('MAIL_MBOX_ERROR_NOT_OPEN', 2110);
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/**
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* The resource isn't valid anymore.
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*/
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define('MAIL_MBOX_ERROR_NO_RESOURCE', 2111);
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/**
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* Message is invalid and would trash the file
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*/
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define('MAIL_MBOX_ERROR_MSG_INVALID', 2112);
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/**
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* Class to read mbox mail files.
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*
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* An mbox mail file is contains plain emails concatenated in one
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* big file. Since each mail starts with "From ", and ends with a newline,
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* they can be separated from each other.
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*
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* This class takes a mbox filename in the constructor, generates an
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* index where the mails start and end when calling open() and returns
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* single mails with get(), using the positions in the index.
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*
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* With the help of this class, you also can add(), remove() and update()
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* messages in the mbox file. When calling one of this methods, the class
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* checks if the file has been modified since the index was created -
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* changing the file with the wrong positions in the index would very likely
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* corrupt it.
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* This check is not done when retrieving single messages via get(), as this
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* would slow down the process if you retrieve thousands of mails. You can,
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* however, call hasBeenModified() before using get() to check for modification
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* yourself. If the method returns true, you should close() and re-open() the
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* file.
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*
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* If something strange happens and you don't know why, activate debugging with
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* setDebug(true). You also can modify the temporary directory in which changed
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* mboxes are stored when adding/removing/modifying by using setTmpDir('/path/');
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*
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* See @link tags for specifications.
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*
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* @category Mail
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* @package Mail_Mbox
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* @author Roberto Berto <darkelder@php.net>
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* @author Christian Weiske <cweiske@php.net>
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
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* @link http://pear.php.net/package/Mail_Mbox
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* @link http://en.wikipedia.org/wiki/Mbox
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* @link http://www.qmail.org/man/man5/mbox.html
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*/
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class Mail_Mbox extends PEAR
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{
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/**
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* File resource / handle
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*
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* @var resource
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* @access protected
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*/
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var $_resource = null;
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/**
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* Message index. Each mail has its own subarray,
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* which contains the start position and end position
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* as first and second subindex.
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*
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* @var array
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* @access protected
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*/
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var $_index = null;
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/**
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* Timestamp at which the file has been modified last.
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*
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* @var int
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* @access protected
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*/
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var $_lastModified = null;
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/**
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* Debug mode
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*
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* Set to true to turn on debug mode.
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*
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* @var bool
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* @access public
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* @see setDebug()
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* @see getDebug()
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*/
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var $debug = false;
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/**
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* Directory in which the temporary mbox files are created.
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* Even if it's a unix directory, it does work on windows as
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* the only function it's used in is tempnam which automatically
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* chooses the right temp directory if this here doesn't exist.
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* So this variable is for special needs only.
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*
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* @var string
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* @access public
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* @see getTmpDir()
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* @see setTmpDir()
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*/
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var $tmpdir = '/tmp';
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/**
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* Determines if the file is automatically re-opened and its
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* structure is parsed after modifying it. Setting this to false
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* makes you responsible for calling open() by hand, but is
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* *a lot* faster when appending many messages.
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*
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* @var bool
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* @access public
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*/
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var $autoReopen = true;
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/**
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* Create a new Mbox class instance.
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* After creating it, you should use open().
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*
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* @param string $file Filename to open.
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*
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* @access public
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*/
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function __construct($file)
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{
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$this->_file = $file;
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}
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/**
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* Open the mbox file
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*
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* Also, this function will process the Mbox and create a cache
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* that tells each message start and end bytes.
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*
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* @return boolean|PEAR_Error True if all went ok, PEAR_Error on failure
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* @access public
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*/
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function open($create = false)
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{
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// check if file exists else return pear error
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if (!is_file($this->_file)) {
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if ($create) {
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$ret = $this->_create();
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if (PEAR::isError($ret)) {
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return $ret;
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}
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} else {
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return PEAR::raiseError(
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'Cannot open the mbox file "'
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. $this->_file . '": file does not exist.',
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MAIL_MBOX_ERROR_FILE_NOT_EXISTING
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);
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}
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}
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// opening the file
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$this->_lastModified = filemtime($this->_file);
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$this->_resource = fopen($this->_file, 'r');
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if (!is_resource($this->_resource)) {
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return PEAR::raiseError(
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'Cannot open the mbox file: maybe without permission.',
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MAIL_MBOX_ERROR_NO_PERMISSION
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);
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}
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// process the file and get the messages bytes offsets
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$this->_process();
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return true;
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}
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/**
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* Creates the file
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*
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* @return boolean True if it was created, false if it already
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* existed. PEAR_Error in case it could not
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* be created.
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*
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* @access protected
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*/
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function _create()
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{
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if (is_file($this->_file)) {
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return false;
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}
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//We should maybe try to check if the directory
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// is writable here. But that's too much fuss for now.
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touch($this->_file);
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if (is_file($this->_file)) {
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return true;
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}
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//error
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return PEAR::raiseError(
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'File could not be created',
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MAIL_MBOX_ERROR_CANNOT_WRITE
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);
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}
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/**
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* Re-opens the file and parses the messages again.
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* Used by other methods to be able to be able to prevent
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* re-opening the file.
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*
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* @return mixed See open() for return values. Returns true if
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* $this->autoReopen is false.
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* @access protected
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*/
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function _reopen()
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{
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if ($this->autoReopen) {
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return $this->open();
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}
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return true;
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}
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/**
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* Close a Mbox
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*
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* Close the Mbox file opened by open()
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*
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* @return mixed true on success, else PEAR_Error
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* @access public
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*/
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function close()
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{
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if (!is_resource($this->_resource)) {
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return PEAR::raiseError(
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'Cannot close the mbox file because it was not open.',
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MAIL_MBOX_ERROR_NOT_OPEN
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);
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}
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if (!fclose($this->_resource)) {
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return PEAR::raiseError(
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'Cannot close the mbox, maybe file is being used (?)',
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MAIL_MBOX_ERROR_CANNOT_CLOSE
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);
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}
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return true;
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}
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/**
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* Get number of messages in this mbox
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*
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* @return int Number of messages on Mbox (starting on 1,
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* 0 if no message exists)
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* @access public
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*/
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function size()
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{
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if ($this->_index !== null) {
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return sizeof($this->_index);
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} else {
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return 0;
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}
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}
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/**
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* Get a message from the mbox
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*
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* Note: Message numbers start from 0.
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*
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* @param int $message The number of the message to retrieve
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*
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* @return string Return the message, PEAR_Error on error
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* @access public
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*/
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function get($message)
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{
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// checking if we have bytes locations for this message
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if (!is_array($this->_index[$message])) {
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return PEAR::raiseError(
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'Message does not exist.',
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MAIL_MBOX_ERROR_MESSAGE_NOT_EXISTING
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);
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}
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// getting bytes locations
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$bytesStart = $this->_index[$message][0];
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$bytesEnd = $this->_index[$message][1];
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// a debug feature to show the bytes locations
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if ($this->debug) {
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printf("%08d=%08d<br />", $bytesStart, $bytesEnd);
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}
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if (!is_resource($this->_resource)) {
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return PEAR::raiseError(
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'Mbox resource is not valid. Maybe you need to re-open it?',
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MAIL_MBOX_ERROR_NO_RESOURCE
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);
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}
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// seek to start of message
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if (fseek($this->_resource, $bytesStart) == -1) {
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return PEAR::raiseError(
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'Cannot read message bytes',
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MAIL_MBOX_ERROR_CANNOT_READ
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);
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}
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if ($bytesEnd - $bytesStart <= 0) {
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return PEAR::raiseError(
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'Message byte length is negative',
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MAIL_MBOX_ERROR_CANNOT_READ
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);
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}
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// reading and returning message
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// (bytes to read = difference of bytes locations)
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$msg = fread($this->_resource, $bytesEnd - $bytesStart);
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return $this->_unescapeMessage($msg);
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}
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/**
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* Remove a message from Mbox and save it.
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*
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* Note: messages start with 0.
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*
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* @param int $message The number of the message to remove, or
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* array of message ids to remove
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*
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* @return mixed Return true else PEAR_Error
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* @access public
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*/
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function remove($message)
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{
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if ($this->hasBeenModified()) {
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return PEAR::raiseError(
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'File has been modified since loading. Re-open the file.',
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MAIL_MBOX_ERROR_MODIFIED
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);
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}
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// convert single message to array
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if (!is_array($message)) {
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$message = array($message);
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}
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// checking if we have bytes locations for this message
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foreach ($message as $msg) {
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if (!isset($this->_index[$msg])
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|| !is_array($this->_index[$msg])
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) {
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return PEAR::raiseError(
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'Message ' . $msg . 'does not exist.',
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MAIL_MBOX_ERROR_MESSAGE_NOT_EXISTING
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);
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}
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}
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// changing umask for security reasons
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$umaskOld = umask(077);
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// creating temp file
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$ftempname = tempnam($this->tmpdir, 'Mail_Mbox');
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// returning to old umask
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umask($umaskOld);
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$ftemp = fopen($ftempname, 'w');
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if ($ftemp === false) {
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return PEAR::raiseError(
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'Cannot create a temp file "' . $ftempname . '".',
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MAIL_MBOX_ERROR_CANNOT_CREATE_TMP
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);
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}
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// writing only undeleted messages
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$messages = $this->size();
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for ($x = 0; $x < $messages; $x++) {
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if (in_array($x, $message)) {
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continue;
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}
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$messageThis = $this->_escapeMessage($this->get($x));
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if (is_string($messageThis)) {
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fwrite($ftemp, $messageThis, strlen($messageThis));
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}
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}
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// closing file
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$this->close();
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fclose($ftemp);
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return $this->_move($ftempname, $this->_file);
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}
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/**
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* Update a message
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*
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* Note: messages start with 0.
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*
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* @param int $message The number of Message to update
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* @param string $content The new content of the Message
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*
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* @return mixed Return true if all is ok, else PEAR_Error
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* @access public
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*/
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function update($message, $content)
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{
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if (!$this->_isValid($content)) {
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return PEAR::raiseError(
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'Message is invalid', MAIL_MBOX_ERROR_MSG_INVALID
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);
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}
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if ($this->hasBeenModified()) {
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return PEAR::raiseError(
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'File has been modified since loading. Re-open the file.',
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MAIL_MBOX_ERROR_MODIFIED
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);
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}
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// checking if we have bytes locations for this message
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if (!is_array($this->_index[$message])) {
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return PEAR::raiseError(
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'Message does not exist.',
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MAIL_MBOX_ERROR_MESSAGE_NOT_EXISTING
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);
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}
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// creating temp file
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$ftempname = tempnam($this->tmpdir, 'Mail_Mbox');
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$ftemp = fopen($ftempname, 'w');
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if ($ftemp === false) {
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return PEAR::raiseError(
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'Cannot create temp file "' . $ftempname . '" .',
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MAIL_MBOX_ERROR_CANNOT_CREATE_TMP
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);
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}
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$messages = $this->size();
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for ($x = 0; $x < $messages; $x++) {
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if ($x == $message) {
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$messageThis = $content;
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} else {
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$messageThis = $this->get($x);
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}
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if (is_string($messageThis)) {
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$messageThis = $this->_escapeMessage($messageThis);
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fwrite($ftemp, $messageThis, strlen($messageThis));
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}
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}
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// closing file
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$this->close();
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fclose($ftemp);
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return $this->_move($ftempname, $this->_file);
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}
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/**
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* Insert a message
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*
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* PEAR::Mail_Mbox will insert the message according its offset.
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* 0 means before the actual message 0. 3 means before the message 3
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* (Remember: message 3 is the fourth message). The default is put
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* AFTER the last message (offset = null).
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*
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* @param string $content The content of the new message
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* @param int $offset Before the offset. Default: last message (null)
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*
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* @return mixed Return true else PEAR_Error object
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* @access public
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*/
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function insert($content, $offset = null)
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{
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if (!$this->_isValid($content)) {
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return PEAR::raiseError(
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'Message is invalid', MAIL_MBOX_ERROR_MSG_INVALID
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);
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}
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if ($this->hasBeenModified()) {
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return PEAR::raiseError(
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'File has been modified since loading. Re-open the file.',
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MAIL_MBOX_ERROR_MODIFIED
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);
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}
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// optimize insert() to use append whenever possible
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if ($offset < 0 || $offset == $this->size() || $this->size() == 0) {
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return $this->append($content);
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}
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// creating temp file
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$ftempname = tempnam($this->tmpdir, 'Mail_Mbox');
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$ftemp = fopen($ftempname, 'w');
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if ($ftemp === false) {
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return PEAR::raiseError(
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'Cannot create temp file "' . $ftempname . '".',
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MAIL_MBOX_ERROR_CANNOT_CREATE_TMP
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);
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}
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// writing only undeleted messages
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$messages = $this->size();
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$content = $this->_escapeMessage($content);
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|
|
if ($messages == 0 && $offset !== null) {
|
|
fwrite($ftemp, $content, strlen($content));
|
|
} else {
|
|
for ($x = 0; $x < $messages; $x++) {
|
|
if ($offset !== null && $x == $offset) {
|
|
fwrite($ftemp, $content, strlen($content));
|
|
}
|
|
$messageThis = $this->_escapeMessage($this->get($x));
|
|
|
|
if (is_string($messageThis)) {
|
|
fwrite($ftemp, $messageThis, strlen($messageThis));
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($offset === null) {
|
|
fwrite($ftemp, $content, strlen($content));
|
|
}
|
|
|
|
// closing file
|
|
$this->close();
|
|
fclose($ftemp);
|
|
|
|
return $this->_move($ftempname, $this->_file);
|
|
}
|
|
|
|
/**
|
|
* Appends a message at the end of the file.
|
|
*
|
|
* This method is also used by insert() since it's faster.
|
|
*
|
|
* @param string $content The content of the new message
|
|
*
|
|
* @return mixed Return true else PEAR_Error object
|
|
* @access public
|
|
*/
|
|
function append($content)
|
|
{
|
|
if (!$this->_isValid($content)) {
|
|
return PEAR::raiseError(
|
|
'Message is invalid', MAIL_MBOX_ERROR_MSG_INVALID
|
|
);
|
|
}
|
|
|
|
$this->close();
|
|
$content = $this->_escapeMessage($content);
|
|
|
|
$fp = fopen($this->_file, 'a');
|
|
if ($fp === false) {
|
|
return PEAR::raiseError(
|
|
'Cannot open file "' . $this->_file . '" for appending.',
|
|
MAIL_MBOX_ERROR_CANNOT_OPEN
|
|
);
|
|
}
|
|
|
|
if (fwrite($fp, $content, strlen($content)) === false) {
|
|
return PEAR::raiseError(
|
|
'Cannot write to file "' . $this->_file. '".',
|
|
MAIL_MBOX_ERROR_CANNOT_WRITE
|
|
);
|
|
}
|
|
|
|
return $this->_reopen();
|
|
}
|
|
|
|
/**
|
|
* Checks if the given message is valid.
|
|
* If it was invalid and we'd add it to the file,
|
|
* it would get unreadable
|
|
*
|
|
* @param string $content Message to be added or updated
|
|
*
|
|
* @return boolean True if it is valid, false if not
|
|
*/
|
|
function _isValid($content)
|
|
{
|
|
if (substr($content, 0, 5) != 'From ') {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Move a file to another.
|
|
*
|
|
* Used internally to move the content of the temp file to the mbox file.
|
|
* Note that we can't use rename() internally, as it behaves very, very
|
|
* strange on windows.
|
|
*
|
|
* @param string $ftempname Source file - will be removed
|
|
* @param string $filename Output file
|
|
*
|
|
* @return boolean|PEAR_Error True if everything went fine, PEAR_Error when
|
|
* an error happened.
|
|
* @access protected
|
|
*/
|
|
function _move($ftempname, $filename)
|
|
{
|
|
if (!copy($ftempname, $filename)) {
|
|
return PEAR::raiseError(
|
|
'Cannot copy "' . $ftempname . '" to "' . $filename . '".',
|
|
MAIL_MBOX_ERROR_CANNOT_WRITE
|
|
);
|
|
}
|
|
|
|
unlink($ftempname);
|
|
|
|
// open another resource and substitute it to the old one
|
|
$this->_file = $filename;
|
|
return $this->_reopen();
|
|
}
|
|
|
|
/**
|
|
* Process the Mbox
|
|
*
|
|
* Put start bytes and end bytes of each message into _index array
|
|
*
|
|
* @return boolean|PEAR_Error True if all went ok, PEAR_Error on failure
|
|
* @access protected
|
|
*/
|
|
function _process()
|
|
{
|
|
$this->_index = array();
|
|
|
|
// sanity check
|
|
if (!is_resource($this->_resource)) {
|
|
return PEAR::raiseError(
|
|
'Resource is not valid. Maybe the file has not be opened?',
|
|
MAIL_MBOX_ERROR_NOT_OPEN
|
|
);
|
|
}
|
|
|
|
// going to start
|
|
if (fseek($this->_resource, 0) == -1) {
|
|
return PEAR::raiseError(
|
|
'Cannot read mbox',
|
|
MAIL_MBOX_ERROR_CANNOT_READ
|
|
);
|
|
}
|
|
|
|
// current start byte position
|
|
$start = 0;
|
|
// last start byte position
|
|
$laststart = 0;
|
|
// there aren't any message
|
|
$hasmessage = false;
|
|
|
|
while ($line = fgets($this->_resource, 4096)) {
|
|
// if line start with "From ", it is a new message
|
|
if (0 === strncmp($line, 'From ', 5)) {
|
|
// save last start byte position
|
|
$laststart = $start;
|
|
|
|
// new start byte position is the start of the line
|
|
$start = ftell($this->_resource) - strlen($line);
|
|
|
|
// if it is not the first message add message positions
|
|
if ($start > 0) {
|
|
$this->_index[] = array($laststart, $start - 1);
|
|
} else {
|
|
// tell that there is really a message on the file
|
|
$hasmessage = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// if there are just one message, or if it's the last one,
|
|
// add it to messages positions
|
|
if (($start == 0 && $hasmessage === true) || ($start > 0)) {
|
|
$this->_index[] = array($start, ftell($this->_resource));
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Quotes "From " lines in the midst of the message.
|
|
* And quoted "From " lines, too :)
|
|
* Also appends the trailing newline.
|
|
* After escaping, the message can be written to file.
|
|
*
|
|
* @param string $message Message content
|
|
*
|
|
* @return string Escaped message
|
|
*
|
|
* @access protected
|
|
* @see _unescapeMessage()
|
|
*/
|
|
function _escapeMessage($message)
|
|
{
|
|
if (substr($message, -1) == "\n") {
|
|
$message .= "\n";
|
|
} else {
|
|
$message .= "\n\n";
|
|
}
|
|
return preg_replace(
|
|
"/\n([>]*From )/",
|
|
"\n>$1",
|
|
$message
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Removes quoted "From " lines from the message
|
|
*
|
|
* @param string $message Message content
|
|
*
|
|
* @return string Unescaped message
|
|
*
|
|
* @access protected
|
|
* @see _escapeMessage()
|
|
*/
|
|
function _unescapeMessage($message)
|
|
{
|
|
return preg_replace(
|
|
"/\n>([>]*From )/",
|
|
"\n$1",
|
|
//the -1 drops the last newline
|
|
substr($message, 0, -1)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Checks if the file was modified since it has been loaded.
|
|
* If this is true, the file needs to be re-opened.
|
|
*
|
|
* @return bool True if it has been modified.
|
|
* @access public
|
|
*/
|
|
function hasBeenModified()
|
|
{
|
|
return filemtime($this->_file) > $this->_lastModified;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Dumb getter and setter
|
|
*/
|
|
|
|
|
|
|
|
/**
|
|
* Set the directory for temporary files.
|
|
*
|
|
* @param string $tmpdir The new temporary directory
|
|
*
|
|
* @return mixed True if all is ok, PEAR_Error if $tmpdir
|
|
* is a dir but not writable
|
|
*
|
|
* @see Mail_Mbox::$tmpdir
|
|
*/
|
|
function setTmpDir($tmpdir)
|
|
{
|
|
if (is_dir($tmpdir) && !is_writable($tmpdir)) {
|
|
return PEAR::raiseError(
|
|
'"' . $tmpdir . '" is not writable.',
|
|
MAIL_MBOX_ERROR_CANNOT_WRITE
|
|
);
|
|
} else {
|
|
$this->tmpdir = $tmpdir;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the temporary directory
|
|
*
|
|
* @return string The temporary directory
|
|
*/
|
|
function getTmpDir()
|
|
{
|
|
return $this->tmpdir;
|
|
}
|
|
|
|
/**
|
|
* Set the debug flag
|
|
*
|
|
* @param bool $debug If debug is on or off
|
|
*
|
|
* @return void
|
|
* @see Mail_Mbox::$debug
|
|
*/
|
|
function setDebug($debug)
|
|
{
|
|
$this->debug = (bool)$debug;
|
|
}
|
|
|
|
/**
|
|
* Returns the debug flag setting
|
|
*
|
|
* @see Mail_Mbox::$debug
|
|
*
|
|
* @return bool If debug is enabled.
|
|
*/
|
|
function getDebug()
|
|
{
|
|
return $this->debug;
|
|
}
|
|
|
|
/**
|
|
* Sets if the mbox is reloaded after modification
|
|
* automatically.
|
|
*
|
|
* @param bool $autoReopen If the mbox is reloaded automatically
|
|
*
|
|
* @return void
|
|
* @see Mail_Mbox::$autoReopen
|
|
*/
|
|
function setAutoReopen($autoReopen)
|
|
{
|
|
$this->autoReopen = (bool)$autoReopen;
|
|
}
|
|
|
|
/**
|
|
* Returns the automatically reopening setting
|
|
*
|
|
* @return bool If the mbox is reloaded automatically.
|
|
*
|
|
* @see Mail_Mbox::$autoReopen
|
|
*/
|
|
function getAutoReopen()
|
|
{
|
|
return $this->autoReopen;
|
|
}
|
|
}
|
|
?>
|