838 lines
27 KiB
PHP
838 lines
27 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 Protocol
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* @copyright Copyright (c) 2005-2008 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: Imap.php 12539 2008-11-11 02:47:17Z yoshida@zend.co.jp $
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*/
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/**
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* @category Zend
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* @package Zend_Mail
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* @subpackage Protocol
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* @copyright Copyright (c) 2005-2008 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_Protocol_Imap
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{
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/**
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* Default timeout in seconds for initiating session
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*/
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const TIMEOUT_CONNECTION = 30;
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/**
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* socket to imap server
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* @var resource|null
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*/
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protected $_socket;
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/**
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* counter for request tag
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* @var int
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*/
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protected $_tagCount = 0;
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/**
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* Public constructor
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*
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* @param string $host hostname of IP address of IMAP server, if given connect() is called
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* @param int|null $port port of IMAP server, null for default (143 or 993 for ssl)
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* @param bool $ssl use ssl? 'SSL', 'TLS' or false
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* @throws Zend_Mail_Protocol_Exception
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*/
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function __construct($host = '', $port = null, $ssl = false)
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{
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if ($host) {
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$this->connect($host, $port, $ssl);
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}
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}
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/**
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* Public destructor
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*/
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public function __destruct()
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{
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$this->logout();
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}
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/**
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* Open connection to POP3 server
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*
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* @param string $host hostname of IP address of POP3 server
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* @param int|null $port of IMAP server, default is 143 (993 for ssl)
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* @param string|bool $ssl use 'SSL', 'TLS' or false
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* @return string welcome message
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* @throws Zend_Mail_Protocol_Exception
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*/
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public function connect($host, $port = null, $ssl = false)
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{
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if ($ssl == 'SSL') {
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$host = 'ssl://' . $host;
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}
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if ($port === null) {
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$port = $ssl === 'SSL' ? 993 : 143;
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}
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$errno = 0;
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$errstr = '';
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$this->_socket = @fsockopen($host, $port, $errno, $errstr, self::TIMEOUT_CONNECTION);
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if (!$this->_socket) {
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/**
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* @see Zend_Mail_Protocol_Exception
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*/
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require_once 'Zend/Mail/Protocol/Exception.php';
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throw new Zend_Mail_Protocol_Exception('cannot connect to host : ' . $errno . ' : ' . $errstr);
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}
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if (!$this->_assumedNextLine('* OK')) {
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/**
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* @see Zend_Mail_Protocol_Exception
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*/
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require_once 'Zend/Mail/Protocol/Exception.php';
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throw new Zend_Mail_Protocol_Exception('host doesn\'t allow connection');
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}
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if ($ssl === 'TLS') {
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$result = $this->requestAndResponse('STARTTLS');
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$result = $result && stream_socket_enable_crypto($this->_socket, true, STREAM_CRYPTO_METHOD_TLS_CLIENT);
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if (!$result) {
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/**
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* @see Zend_Mail_Protocol_Exception
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*/
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require_once 'Zend/Mail/Protocol/Exception.php';
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throw new Zend_Mail_Protocol_Exception('cannot enable TLS');
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}
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}
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}
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/**
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* get the next line from socket with error checking, but nothing else
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*
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* @return string next line
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* @throws Zend_Mail_Protocol_Exception
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*/
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protected function _nextLine()
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{
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$line = @fgets($this->_socket);
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if ($line === false) {
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/**
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* @see Zend_Mail_Protocol_Exception
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*/
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require_once 'Zend/Mail/Protocol/Exception.php';
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throw new Zend_Mail_Protocol_Exception('cannot read - connection closed?');
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}
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return $line;
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}
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/**
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* get next line and assume it starts with $start. some requests give a simple
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* feedback so we can quickly check if we can go on.
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*
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* @param string $start the first bytes we assume to be in the next line
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* @return bool line starts with $start
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* @throws Zend_Mail_Protocol_Exception
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*/
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protected function _assumedNextLine($start)
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{
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$line = $this->_nextLine();
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return strpos($line, $start) === 0;
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}
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/**
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* get next line and split the tag. that's the normal case for a response line
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*
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* @param string $tag tag of line is returned by reference
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* @return string next line
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* @throws Zend_Mail_Protocol_Exception
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*/
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protected function _nextTaggedLine(&$tag)
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{
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$line = $this->_nextLine();
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// seperate tag from line
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list($tag, $line) = explode(' ', $line, 2);
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return $line;
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}
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/**
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* split a given line in tokens. a token is literal of any form or a list
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*
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* @param string $line line to decode
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* @return array tokens, literals are returned as string, lists as array
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* @throws Zend_Mail_Protocol_Exception
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*/
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protected function _decodeLine($line)
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{
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$tokens = array();
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$stack = array();
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/*
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We start to decode the response here. The unterstood tokens are:
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literal
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"literal" or also "lit\\er\"al"
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{bytes}<NL>literal
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(literals*)
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All tokens are returned in an array. Literals in braces (the last unterstood
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token in the list) are returned as an array of tokens. I.e. the following response:
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"foo" baz {3}<NL>bar ("f\\\"oo" bar)
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would be returned as:
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array('foo', 'baz', 'bar', array('f\\\"oo', 'bar'));
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// TODO: add handling of '[' and ']' to parser for easier handling of response text
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*/
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// replace any trailling <NL> including spaces with a single space
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$line = rtrim($line) . ' ';
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while (($pos = strpos($line, ' ')) !== false) {
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$token = substr($line, 0, $pos);
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while ($token[0] == '(') {
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array_push($stack, $tokens);
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$tokens = array();
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$token = substr($token, 1);
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}
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if ($token[0] == '"') {
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if (preg_match('%^"((.|\\\\|\\")*?)" *%', $line, $matches)) {
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$tokens[] = $matches[1];
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$line = substr($line, strlen($matches[0]));
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continue;
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}
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}
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if ($token[0] == '{') {
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$endPos = strpos($token, '}');
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$chars = substr($token, 1, $endPos - 1);
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if (is_numeric($chars)) {
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$token = '';
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while (strlen($token) < $chars) {
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$token .= $this->_nextLine();
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}
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$line = '';
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if (strlen($token) > $chars) {
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$line = substr($token, $chars);
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$token = substr($token, 0, $chars);
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} else {
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$line .= $this->_nextLine();
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}
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$tokens[] = $token;
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$line = trim($line) . ' ';
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continue;
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}
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}
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if ($stack && $token[strlen($token) - 1] == ')') {
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// closing braces are not seperated by spaces, so we need to count them
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$braces = strlen($token);
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$token = rtrim($token, ')');
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// only count braces if more than one
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$braces -= strlen($token) + 1;
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// only add if token had more than just closing braces
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if ($token) {
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$tokens[] = $token;
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}
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$token = $tokens;
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$tokens = array_pop($stack);
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// special handline if more than one closing brace
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while ($braces-- > 0) {
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$tokens[] = $token;
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$token = $tokens;
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$tokens = array_pop($stack);
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}
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}
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$tokens[] = $token;
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$line = substr($line, $pos + 1);
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}
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// maybe the server forgot to send some closing braces
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while ($stack) {
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$child = $tokens;
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$tokens = array_pop($stack);
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$tokens[] = $child;
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}
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return $tokens;
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}
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/**
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* read a response "line" (could also be more than one real line if response has {..}<NL>)
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* and do a simple decode
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*
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* @param array|string $tokens decoded tokens are returned by reference, if $dontParse
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* is true the unparsed line is returned here
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* @param string $wantedTag check for this tag for response code. Default '*' is
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* continuation tag.
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* @param bool $dontParse if true only the unparsed line is returned $tokens
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* @return bool if returned tag matches wanted tag
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* @throws Zend_Mail_Protocol_Exception
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*/
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public function readLine(&$tokens = array(), $wantedTag = '*', $dontParse = false)
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{
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$line = $this->_nextTaggedLine($tag);
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if (!$dontParse) {
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$tokens = $this->_decodeLine($line);
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} else {
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$tokens = $line;
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}
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// if tag is wanted tag we might be at the end of a multiline response
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return $tag == $wantedTag;
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}
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/**
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* read all lines of response until given tag is found (last line of response)
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*
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* @param string $tag the tag of your request
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* @param string|array $filter you can filter the response so you get only the
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* given response lines
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* @param bool $dontParse if true every line is returned unparsed instead of
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* the decoded tokens
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* @return null|bool|array tokens if success, false if error, null if bad request
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* @throws Zend_Mail_Protocol_Exception
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*/
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public function readResponse($tag, $dontParse = false)
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{
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$lines = array();
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while (!$this->readLine($tokens, $tag, $dontParse)) {
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$lines[] = $tokens;
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}
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if ($dontParse) {
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// last to chars are still needed for response code
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$tokens = array(substr($tokens, 0, 2));
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}
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// last line has response code
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if ($tokens[0] == 'OK') {
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return $lines ? $lines : true;
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} else if ($tokens[0] == 'NO'){
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return false;
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}
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return null;
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}
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/**
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* send a request
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*
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* @param string $command your request command
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* @param array $tokens additional parameters to command, use escapeString() to prepare
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* @param string $tag provide a tag otherwise an autogenerated is returned
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* @return null
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* @throws Zend_Mail_Protocol_Exception
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*/
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public function sendRequest($command, $tokens = array(), &$tag = null)
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{
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if (!$tag) {
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++$this->_tagCount;
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$tag = 'TAG' . $this->_tagCount;
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}
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$line = $tag . ' ' . $command;
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foreach ($tokens as $token) {
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if (is_array($token)) {
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if (@fputs($this->_socket, $line . ' ' . $token[0] . "\r\n") === false) {
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/**
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* @see Zend_Mail_Protocol_Exception
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*/
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require_once 'Zend/Mail/Protocol/Exception.php';
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throw new Zend_Mail_Protocol_Exception('cannot write - connection closed?');
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}
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if (!$this->_assumedNextLine('+ ')) {
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/**
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* @see Zend_Mail_Protocol_Exception
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*/
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require_once 'Zend/Mail/Protocol/Exception.php';
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throw new Zend_Mail_Protocol_Exception('cannot send literal string');
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}
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$line = $token[1];
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} else {
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$line .= ' ' . $token;
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}
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}
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if (@fputs($this->_socket, $line . "\r\n") === false) {
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/**
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* @see Zend_Mail_Protocol_Exception
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*/
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require_once 'Zend/Mail/Protocol/Exception.php';
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throw new Zend_Mail_Protocol_Exception('cannot write - connection closed?');
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}
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}
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/**
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* send a request and get response at once
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*
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* @param string $command command as in sendRequest()
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* @param array $tokens parameters as in sendRequest()
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* @param bool $dontParse if true unparsed lines are returned instead of tokens
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* @return mixed response as in readResponse()
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* @throws Zend_Mail_Protocol_Exception
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*/
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public function requestAndResponse($command, $tokens = array(), $dontParse = false)
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{
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$this->sendRequest($command, $tokens, $tag);
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$response = $this->readResponse($tag, $dontParse);
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return $response;
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}
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/**
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* escape one or more literals i.e. for sendRequest
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*
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* @param string|array $string the literal/-s
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* @return string|array escape literals, literals with newline ar returned
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* as array('{size}', 'string');
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*/
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public function escapeString($string)
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{
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if (func_num_args() < 2) {
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if (strpos($string, "\n") !== false) {
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return array('{' . strlen($string) . '}', $string);
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} else {
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return '"' . str_replace(array('\\', '"'), array('\\\\', '\\"'), $string) . '"';
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}
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}
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$result = array();
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foreach (func_get_args() as $string) {
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$result[] = $this->escapeString($string);
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}
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return $result;
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}
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/**
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* escape a list with literals or lists
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*
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* @param array $list list with literals or lists as PHP array
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* @return string escaped list for imap
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*/
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public function escapeList($list)
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{
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$result = array();
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foreach ($list as $k => $v) {
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if (!is_array($v)) {
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// $result[] = $this->escapeString($v);
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$result[] = $v;
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continue;
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}
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$result[] = $this->escapeList($v);
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}
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return '(' . implode(' ', $result) . ')';
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}
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/**
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* Login to IMAP server.
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*
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* @param string $user username
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* @param string $password password
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* @return bool success
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* @throws Zend_Mail_Protocol_Exception
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*/
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public function login($user, $password)
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{
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return $this->requestAndResponse('LOGIN', $this->escapeString($user, $password), true);
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}
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/**
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* logout of imap server
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*
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* @return bool success
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*/
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public function logout()
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{
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$result = false;
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if ($this->_socket) {
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try {
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$result = $this->requestAndResponse('LOGOUT', array(), true);
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} catch (Zend_Mail_Protocol_Exception $e) {
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// ignoring exception
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}
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fclose($this->_socket);
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$this->_socket = null;
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}
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return $result;
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}
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/**
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* Get capabilities from IMAP server
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*
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* @return array list of capabilities
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* @throws Zend_Mail_Protocol_Exception
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*/
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public function capability()
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{
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$response = $this->requestAndResponse('CAPABILITY');
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if (!$response) {
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return $response;
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}
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$capabilities = array();
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foreach ($response as $line) {
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$capabilities = array_merge($capabilities, $line);
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}
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return $capabilities;
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}
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/**
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* Examine and select have the same response. The common code for both
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* is in this method
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*
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* @param string $command can be 'EXAMINE' or 'SELECT' and this is used as command
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* @param string $box which folder to change to or examine
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* @return bool|array false if error, array with returned information
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* otherwise (flags, exists, recent, uidvalidity)
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* @throws Zend_Mail_Protocol_Exception
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*/
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public function examineOrSelect($command = 'EXAMINE', $box = 'INBOX')
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{
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$this->sendRequest($command, array($this->escapeString($box)), $tag);
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$result = array();
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while (!$this->readLine($tokens, $tag)) {
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if ($tokens[0] == 'FLAGS') {
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array_shift($tokens);
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$result['flags'] = $tokens;
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continue;
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}
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switch ($tokens[1]) {
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case 'EXISTS':
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case 'RECENT':
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$result[strtolower($tokens[1])] = $tokens[0];
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break;
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case '[UIDVALIDITY':
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$result['uidvalidity'] = (int)$tokens[2];
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break;
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default:
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// ignore
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}
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}
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if ($tokens[0] != 'OK') {
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return false;
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}
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return $result;
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}
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/**
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* change folder
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*
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* @param string $box change to this folder
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* @return bool|array see examineOrselect()
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* @throws Zend_Mail_Protocol_Exception
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*/
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public function select($box = 'INBOX')
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{
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return $this->examineOrSelect('SELECT', $box);
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}
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/**
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* examine folder
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*
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* @param string $box examine this folder
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* @return bool|array see examineOrselect()
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* @throws Zend_Mail_Protocol_Exception
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*/
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public function examine($box = 'INBOX')
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{
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return $this->examineOrSelect('EXAMINE', $box);
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}
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/**
|
|
* fetch one or more items of one or more messages
|
|
*
|
|
* @param string|array $items items to fetch from message(s) as string (if only one item)
|
|
* or array of strings
|
|
* @param int $from message for items or start message if $to !== null
|
|
* @param int|null $to if null only one message ($from) is fetched, else it's the
|
|
* last message, INF means last message avaible
|
|
* @return string|array if only one item of one message is fetched it's returned as string
|
|
* if items of one message are fetched it's returned as (name => value)
|
|
* if one items of messages are fetched it's returned as (msgno => value)
|
|
* if items of messages are fetchted it's returned as (msgno => (name => value))
|
|
* @throws Zend_Mail_Protocol_Exception
|
|
*/
|
|
public function fetch($items, $from, $to = null)
|
|
{
|
|
if (is_array($from)) {
|
|
$set = implode(',', $from);
|
|
} else if ($to === null) {
|
|
$set = (int)$from;
|
|
} else if ($to === INF) {
|
|
$set = (int)$from . ':*';
|
|
} else {
|
|
$set = (int)$from . ':' . (int)$to;
|
|
}
|
|
|
|
$items = (array)$items;
|
|
$itemList = $this->escapeList($items);
|
|
|
|
$this->sendRequest('FETCH', array($set, $itemList), $tag);
|
|
|
|
$result = array();
|
|
while (!$this->readLine($tokens, $tag)) {
|
|
// ignore other responses
|
|
if ($tokens[1] != 'FETCH') {
|
|
continue;
|
|
}
|
|
// ignore other messages
|
|
if ($to === null && !is_array($from) && $tokens[0] != $from) {
|
|
continue;
|
|
}
|
|
// if we only want one item we return that one directly
|
|
if (count($items) == 1) {
|
|
if ($tokens[2][0] == $items[0]) {
|
|
$data = $tokens[2][1];
|
|
} else {
|
|
// maybe the server send an other field we didn't wanted
|
|
$count = count($tokens[2]);
|
|
// we start with 2, because 0 was already checked
|
|
for ($i = 2; $i < $count; $i += 2) {
|
|
if ($tokens[2][$i] != $items[0]) {
|
|
continue;
|
|
}
|
|
$data = $tokens[2][$i + 1];
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
$data = array();
|
|
while (key($tokens[2]) !== null) {
|
|
$data[current($tokens[2])] = next($tokens[2]);
|
|
next($tokens[2]);
|
|
}
|
|
}
|
|
// if we want only one message we can ignore everything else and just return
|
|
if ($to === null && !is_array($from) && $tokens[0] == $from) {
|
|
// we still need to read all lines
|
|
while (!$this->readLine($tokens, $tag));
|
|
return $data;
|
|
}
|
|
$result[$tokens[0]] = $data;
|
|
}
|
|
|
|
if ($to === null && !is_array($from)) {
|
|
/**
|
|
* @see Zend_Mail_Protocol_Exception
|
|
*/
|
|
require_once 'Zend/Mail/Protocol/Exception.php';
|
|
throw new Zend_Mail_Protocol_Exception('the single id was not found in response');
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* get mailbox list
|
|
*
|
|
* this method can't be named after the IMAP command 'LIST', as list is a reserved keyword
|
|
*
|
|
* @param string $reference mailbox reference for list
|
|
* @param string $mailbox mailbox name match with wildcards
|
|
* @return array mailboxes that matched $mailbox as array(globalName => array('delim' => .., 'flags' => ..))
|
|
* @throws Zend_Mail_Protocol_Exception
|
|
*/
|
|
public function listMailbox($reference = '', $mailbox = '*')
|
|
{
|
|
$result = array();
|
|
$list = $this->requestAndResponse('LIST', $this->escapeString($reference, $mailbox));
|
|
if (!$list || $list === true) {
|
|
return $result;
|
|
}
|
|
|
|
foreach ($list as $item) {
|
|
if (count($item) != 4 || $item[0] != 'LIST') {
|
|
continue;
|
|
}
|
|
$result[$item[3]] = array('delim' => $item[2], 'flags' => $item[1]);
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* set flags
|
|
*
|
|
* @param array $flags flags to set, add or remove - see $mode
|
|
* @param int $from message for items or start message if $to !== null
|
|
* @param int|null $to if null only one message ($from) is fetched, else it's the
|
|
* last message, INF means last message avaible
|
|
* @param string|null $mode '+' to add flags, '-' to remove flags, everything else sets the flags as given
|
|
* @param bool $silent if false the return values are the new flags for the wanted messages
|
|
* @return bool|array new flags if $silent is false, else true or false depending on success
|
|
* @throws Zend_Mail_Protocol_Exception
|
|
*/
|
|
public function store(array $flags, $from, $to = null, $mode = null, $silent = true)
|
|
{
|
|
$item = 'FLAGS';
|
|
if ($mode == '+' || $mode == '-') {
|
|
$item = $mode . $item;
|
|
}
|
|
if ($silent) {
|
|
$item .= '.SILENT';
|
|
}
|
|
|
|
$flags = $this->escapeList($flags);
|
|
$set = (int)$from;
|
|
if ($to != null) {
|
|
$set .= ':' . ($to == INF ? '*' : (int)$to);
|
|
}
|
|
|
|
$result = $this->requestAndResponse('STORE', array($set, $item, $flags), $silent);
|
|
|
|
if ($silent) {
|
|
return $result ? true : false;
|
|
}
|
|
|
|
$tokens = $result;
|
|
$result = array();
|
|
foreach ($tokens as $token) {
|
|
if ($token[1] != 'FETCH' || $token[2][0] != 'FLAGS') {
|
|
continue;
|
|
}
|
|
$result[$token[0]] = $token[2][1];
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* append a new message to given folder
|
|
*
|
|
* @param string $folder name of target folder
|
|
* @param string $message full message content
|
|
* @param array $flags flags for new message
|
|
* @param string $date date for new message
|
|
* @return bool success
|
|
* @throws Zend_Mail_Protocol_Exception
|
|
*/
|
|
public function append($folder, $message, $flags = null, $date = null)
|
|
{
|
|
$tokens = array();
|
|
$tokens[] = $this->escapeString($folder);
|
|
if ($flags !== null) {
|
|
$tokens[] = $this->escapeList($flags);
|
|
}
|
|
if ($date !== null) {
|
|
$tokens[] = $this->escapeString($date);
|
|
}
|
|
$tokens[] = $this->escapeString($message);
|
|
|
|
return $this->requestAndResponse('APPEND', $tokens, true);
|
|
}
|
|
|
|
/**
|
|
* copy message set from current folder to other folder
|
|
*
|
|
* @param string $folder destination folder
|
|
* @param int|null $to if null only one message ($from) is fetched, else it's the
|
|
* last message, INF means last message avaible
|
|
* @return bool success
|
|
* @throws Zend_Mail_Protocol_Exception
|
|
*/
|
|
public function copy($folder, $from, $to = null)
|
|
{
|
|
$set = (int)$from;
|
|
if ($to != null) {
|
|
$set .= ':' . ($to == INF ? '*' : (int)$to);
|
|
}
|
|
|
|
return $this->requestAndResponse('COPY', array($set, $this->escapeString($folder)), true);
|
|
}
|
|
|
|
/**
|
|
* create a new folder (and parent folders if needed)
|
|
*
|
|
* @param string $folder folder name
|
|
* @return bool success
|
|
*/
|
|
public function create($folder)
|
|
{
|
|
return $this->requestAndResponse('CREATE', array($this->escapeString($folder)), true);
|
|
}
|
|
|
|
/**
|
|
* rename an existing folder
|
|
*
|
|
* @param string $old old name
|
|
* @param string $new new name
|
|
* @return bool success
|
|
*/
|
|
public function rename($old, $new)
|
|
{
|
|
return $this->requestAndResponse('RENAME', $this->escapeString($old, $new), true);
|
|
}
|
|
|
|
/**
|
|
* remove a folder
|
|
*
|
|
* @param string $folder folder name
|
|
* @return bool success
|
|
*/
|
|
public function delete($folder)
|
|
{
|
|
return $this->requestAndResponse('DELETE', array($this->escapeString($folder)), true);
|
|
}
|
|
|
|
/**
|
|
* permanently remove messages
|
|
*
|
|
* @return bool success
|
|
*/
|
|
public function expunge()
|
|
{
|
|
// TODO: parse response?
|
|
return $this->requestAndResponse('EXPUNGE');
|
|
}
|
|
|
|
/**
|
|
* send noop
|
|
*
|
|
* @return bool success
|
|
*/
|
|
public function noop()
|
|
{
|
|
// TODO: parse response
|
|
return $this->requestAndResponse('NOOP');
|
|
}
|
|
|
|
/**
|
|
* do a search request
|
|
*
|
|
* This method is currently marked as internal as the API might change and is not
|
|
* safe if you don't take precautions.
|
|
*
|
|
* @internal
|
|
* @return array message ids
|
|
*/
|
|
public function search(array $params)
|
|
{
|
|
$response = $this->requestAndResponse('SEARCH', $params);
|
|
if (!$response) {
|
|
return $response;
|
|
}
|
|
|
|
foreach ($response as $ids) {
|
|
if ($ids[0] == 'SEARCH') {
|
|
array_shift($ids);
|
|
return $ids;
|
|
}
|
|
}
|
|
return array();
|
|
}
|
|
|
|
}
|