mirror of
https://github.com/EGroupware/egroupware.git
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1146 lines
37 KiB
PHP
1146 lines
37 KiB
PHP
<?php
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// +-----------------------------------------------------------------------+
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// | Copyright (c) 2002-2003, Richard Heyes |
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// | Copyright (c) 2006, Anish Mistry |
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// | All rights reserved. |
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// | |
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// | Redistribution and use in source and binary forms, with or without |
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// | modification, are permitted provided that the following conditions |
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// | are met: |
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// | |
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// | o Redistributions of source code must retain the above copyright |
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// | notice, this list of conditions and the following disclaimer. |
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// | o Redistributions in binary form must reproduce the above copyright |
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// | notice, this list of conditions and the following disclaimer in the |
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// | documentation and/or other materials provided with the distribution.|
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// | o The names of the authors may not be used to endorse or promote |
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// | products derived from this software without specific prior written |
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// | permission. |
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// | |
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// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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// | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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// | OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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// | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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// | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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// | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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// | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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// | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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// | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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// | |
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// +-----------------------------------------------------------------------+
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// | Author: Richard Heyes <richard@phpguru.org> |
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// | Co-Author: Damian Fernandez Sosa <damlists@cnba.uba.ar> |
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// | Co-Author: Anish Mistry <amistry@am-productions.biz> |
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// +-----------------------------------------------------------------------+
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require_once('Net/Socket.php');
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/**
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* TODO
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*
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* o supportsAuthMech()
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*/
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/**
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* Disconnected state
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* @const NET_SIEVE_STATE_DISCONNECTED
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*/
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define('NET_SIEVE_STATE_DISCONNECTED', 1, true);
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/**
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* Authorisation state
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* @const NET_SIEVE_STATE_AUTHORISATION
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*/
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define('NET_SIEVE_STATE_AUTHORISATION', 2, true);
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/**
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* Transaction state
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* @const NET_SIEVE_STATE_TRANSACTION
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*/
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define('NET_SIEVE_STATE_TRANSACTION', 3, true);
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/**
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* A class for talking to the timsieved server which
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* comes with Cyrus IMAP.
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*
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* SIEVE: RFC3028 http://www.ietf.org/rfc/rfc3028.txt
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* MANAGE-SIEVE: http://www.ietf.org/internet-drafts/draft-martin-managesieve-06.txt
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*
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* @author Richard Heyes <richard@php.net>
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* @author Damian Fernandez Sosa <damlists@cnba.uba.ar>
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* @author Anish Mistry <amistry@am-productions.biz>
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* @access public
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* @version 1.2.0
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* @package Net_Sieve
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*/
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class Net_Sieve
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{
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/**
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* The socket object
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* @var object
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*/
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var $_sock;
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/**
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* Info about the connect
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* @var array
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*/
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var $_data;
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/**
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* Current state of the connection
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* @var integer
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*/
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var $_state;
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/**
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* Constructor error is any
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* @var object
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*/
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var $_error;
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/**
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* To allow class debuging
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* @var boolean
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*/
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var $_debug = false;
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/**
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* Allows picking up of an already established connection
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* @var boolean
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*/
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var $_bypassAuth = false;
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/**
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* Whether to use TLS if available
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* @var boolean
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*/
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var $_useTLS = true;
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/**
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* The auth methods this class support
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* @var array
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*/
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var $supportedAuthMethods=array('DIGEST-MD5', 'CRAM-MD5', 'PLAIN' , 'LOGIN');
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//if you have problems using DIGEST-MD5 authentication please comment the line above and uncomment the following line
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//var $supportedAuthMethods=array( 'CRAM-MD5', 'PLAIN' , 'LOGIN');
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//var $supportedAuthMethods=array( 'PLAIN' , 'LOGIN');
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/**
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* The auth methods this class support
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* @var array
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*/
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var $supportedSASLAuthMethods=array('DIGEST-MD5', 'CRAM-MD5');
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/**
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* Handles posible referral loops
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* @var array
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*/
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var $_maxReferralCount = 15;
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/**
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* Constructor
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* Sets up the object, connects to the server and logs in. stores
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* any generated error in $this->_error, which can be retrieved
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* using the getError() method.
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*
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* @param string $user Login username
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* @param string $pass Login password
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* @param string $host Hostname of server
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* @param string $port Port of server
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* @param string $logintype Type of login to perform
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* @param string $euser Effective User (if $user=admin, login as $euser)
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* @param string $bypassAuth Skip the authentication phase. Useful if the socket
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is already open.
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* @param boolean $useTLS Use TLS if available
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*/
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function Net_Sieve($user = null , $pass = null , $host = 'localhost', $port = 2000, $logintype = '', $euser = '', $debug = false, $bypassAuth = false, $useTLS = true)
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{
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$this->_state = NET_SIEVE_STATE_DISCONNECTED;
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$this->_data['user'] = $user;
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$this->_data['pass'] = $pass;
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$this->_data['host'] = $host;
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$this->_data['port'] = $port;
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$this->_data['logintype'] = $logintype;
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$this->_data['euser'] = $euser;
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$this->_sock = &new Net_Socket();
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$this->_debug = $debug;
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$this->_bypassAuth = $bypassAuth;
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$this->_useTLS = $useTLS;
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/*
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* Include the Auth_SASL package. If the package is not available,
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* we disable the authentication methods that depend upon it.
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*/
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if ((@include_once 'Auth/SASL.php') === false) {
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if($this->_debug){
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echo "AUTH_SASL NOT PRESENT!\n";
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}
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foreach($this->supportedSASLAuthMethods as $SASLMethod){
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$pos = array_search( $SASLMethod, $this->supportedAuthMethods );
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if($this->_debug){
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echo "DISABLING METHOD $SASLMethod\n";
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}
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unset($this->supportedAuthMethods[$pos]);
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}
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}
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if( ($user != null) && ($pass != null) ){
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$this->_error = $this->_handleConnectAndLogin();
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}
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}
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/**
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* Handles the errors the class can find
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* on the server
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*
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* @access private
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* @param mixed $msg Text error message or PEAR error object
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* @param integer $code Numeric error code
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* @return PEAR_Error
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*/
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function _raiseError($msg, $code)
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{
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include_once 'PEAR.php';
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return PEAR::raiseError($msg, $code);
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}
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/**
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* Handles connect and login.
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* on the server
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*
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* @access private
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* @return mixed Indexed array of scriptnames or PEAR_Error on failure
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*/
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function _handleConnectAndLogin()
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{
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if (PEAR::isError($res = $this->connect($this->_data['host'] , $this->_data['port'], $this->_useTLS ))) {
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return $res;
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}
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if($this->_bypassAuth === false) {
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if (PEAR::isError($res = $this->login($this->_data['user'], $this->_data['pass'], $this->_data['logintype'] , $this->_data['euser'] , $this->_bypassAuth) ) ) {
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return $res;
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}
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}
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return true;
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}
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/**
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* Returns an indexed array of scripts currently
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* on the server
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*
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* @return mixed Indexed array of scriptnames or PEAR_Error on failure
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*/
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function listScripts()
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{
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if (is_array($scripts = $this->_cmdListScripts())) {
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$this->_active = $scripts[1];
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return $scripts[0];
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} else {
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return $scripts;
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}
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}
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/**
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* Returns the active script
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*
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* @return mixed The active scriptname or PEAR_Error on failure
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*/
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function getActive()
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{
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if (!empty($this->_active)) {
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return $this->_active;
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} elseif (is_array($scripts = $this->_cmdListScripts())) {
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$this->_active = $scripts[1];
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return $scripts[1];
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}
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}
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/**
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* Sets the active script
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*
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* @param string $scriptname The name of the script to be set as active
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* @return mixed true on success, PEAR_Error on failure
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*/
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function setActive($scriptname)
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{
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return $this->_cmdSetActive($scriptname);
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}
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/**
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* Retrieves a script
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*
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* @param string $scriptname The name of the script to be retrieved
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* @return mixed The script on success, PEAR_Error on failure
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*/
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function getScript($scriptname)
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{
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return $this->_cmdGetScript($scriptname);
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}
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/**
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* Adds a script to the server
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*
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* @param string $scriptname Name of the script
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* @param string $script The script
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* @param boolean $makeactive Whether to make this the active script
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* @return mixed true on success, PEAR_Error on failure
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*/
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function installScript($scriptname, $script, $makeactive = false)
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{
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if (PEAR::isError($res = $this->_cmdPutScript($scriptname, $script))) {
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return $res;
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} elseif ($makeactive) {
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return $this->_cmdSetActive($scriptname);
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} else {
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return true;
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}
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}
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/**
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* Removes a script from the server
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*
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* @param string $scriptname Name of the script
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* @return mixed True on success, PEAR_Error on failure
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*/
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function removeScript($scriptname)
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{
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return $this->_cmdDeleteScript($scriptname);
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}
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/**
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* Returns any error that may have been generated in the
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* constructor
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*
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* @return mixed False if no error, PEAR_Error otherwise
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*/
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function getError()
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{
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return PEAR::isError($this->_error) ? $this->_error : false;
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}
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/**
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* Handles connecting to the server and checking the
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* response is valid.
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*
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* @access private
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* @param string $host Hostname of server
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* @param string $port Port of server
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* @param array $options List of options to pass to connect
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* @param boolean $useTLS Use TLS if available
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* @return mixed True on success, PEAR_Error otherwise
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*/
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function connect($host, $port, $options = null, $useTLS = true)
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{
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if (NET_SIEVE_STATE_DISCONNECTED != $this->_state) {
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$msg='Not currently in DISCONNECTED state';
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$code=1;
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return $this->_raiseError($msg,$code);
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}
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if (PEAR::isError($res = $this->_sock->connect($host, $port, false, 5, $options))) {
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return $res;
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}
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if($this->_bypassAuth === false) {
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$this->_state = NET_SIEVE_STATE_AUTHORISATION;
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if (PEAR::isError($res = $this->_doCmd())) {
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return $res;
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}
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} else {
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$this->_state = NET_SIEVE_STATE_TRANSACTION;
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}
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// Explicitly ask for the capabilities in case the connection
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// is picked up from an existing connection.
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if(PEAR::isError($res = $this->_cmdCapability() )) {
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$msg='Failed to connect, server said: ' . $res->getMessage();
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$code=2;
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return $this->_raiseError($msg,$code);
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}
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// Get logon greeting/capability and parse
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$this->_parseCapability($res);
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if($useTLS === true) {
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// check if we can enable TLS via STARTTLS
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if(isset($this->_capability['starttls']) && function_exists('stream_socket_enable_crypto') === true) {
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if (PEAR::isError($res = $this->_startTLS())) {
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return $res;
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}
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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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* Logs into server.
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*
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* @param string $user Login username
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* @param string $pass Login password
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* @param string $logintype Type of login method to use
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* @param string $euser Effective UID (perform on behalf of $euser)
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* @param boolean $bypassAuth Do not perform authentication
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* @return mixed True on success, PEAR_Error otherwise
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*/
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function login($user, $pass, $logintype = null , $euser = '', $bypassAuth = false)
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{
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if (NET_SIEVE_STATE_AUTHORISATION != $this->_state) {
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$msg='Not currently in AUTHORISATION state';
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$code=1;
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return $this->_raiseError($msg,$code);
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}
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if( $bypassAuth === false ){
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if(PEAR::isError($res=$this->_cmdAuthenticate($user , $pass , $logintype, $euser ) ) ){
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return $res;
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}
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}
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$this->_state = NET_SIEVE_STATE_TRANSACTION;
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return true;
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}
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/**
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* Handles the authentication using any known method
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*
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* @param string $uid The userid to authenticate as.
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* @param string $pwd The password to authenticate with.
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* @param string $userMethod The method to use ( if $userMethod == '' then the class chooses the best method (the stronger is the best ) )
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* @param string $euser The effective uid to authenticate as.
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*
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* @return mixed string or PEAR_Error
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*
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* @access private
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* @since 1.0
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*/
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function _cmdAuthenticate($uid , $pwd , $userMethod = null , $euser = '' )
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{
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if ( PEAR::isError( $method = $this->_getBestAuthMethod($userMethod) ) ) {
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return $method;
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}
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switch ($method) {
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case 'DIGEST-MD5':
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$result = $this->_authDigest_MD5( $uid , $pwd , $euser );
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return $result;
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break;
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case 'CRAM-MD5':
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$result = $this->_authCRAM_MD5( $uid , $pwd, $euser);
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break;
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case 'LOGIN':
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$result = $this->_authLOGIN( $uid , $pwd , $euser );
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break;
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case 'PLAIN':
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$result = $this->_authPLAIN( $uid , $pwd , $euser );
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break;
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default :
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$result = new PEAR_Error( "$method is not a supported authentication method" );
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break;
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}
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if (PEAR::isError($res = $this->_doCmd() )) {
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return $res;
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}
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return $result;
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}
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/**
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* Authenticates the user using the PLAIN method.
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*
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* @param string $user The userid to authenticate as.
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* @param string $pass The password to authenticate with.
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* @param string $euser The effective uid to authenticate as.
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*
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* @return array Returns an array containing the response
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*
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* @access private
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* @since 1.0
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*/
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function _authPLAIN($user, $pass , $euser )
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{
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if ($euser != '') {
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$cmd=sprintf('AUTHENTICATE "PLAIN" "%s"', base64_encode($euser . chr(0) . $user . chr(0) . $pass ) ) ;
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} else {
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$cmd=sprintf('AUTHENTICATE "PLAIN" "%s"', base64_encode( chr(0) . $user . chr(0) . $pass ) );
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}
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return $this->_sendCmd( $cmd ) ;
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}
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/**
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* Authenticates the user using the PLAIN method.
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*
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* @param string $user The userid to authenticate as.
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* @param string $pass The password to authenticate with.
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* @param string $euser The effective uid to authenticate as.
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*
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* @return array Returns an array containing the response
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*
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* @access private
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* @since 1.0
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*/
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function _authLOGIN($user, $pass , $euser )
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{
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$this->_sendCmd('AUTHENTICATE "LOGIN"');
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$this->_doCmd(sprintf('"%s"', base64_encode($user)));
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$this->_doCmd(sprintf('"%s"', base64_encode($pass)));
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}
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/**
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* Authenticates the user using the CRAM-MD5 method.
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*
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* @param string $uid The userid to authenticate as.
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* @param string $pwd The password to authenticate with.
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* @param string $euser The effective uid to authenticate as.
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*
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* @return array Returns an array containing the response
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*
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* @access private
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* @since 1.0
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*/
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function _authCRAM_MD5($uid, $pwd, $euser)
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{
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if ( PEAR::isError( $challenge = $this->_doCmd( 'AUTHENTICATE "CRAM-MD5"' ) ) ) {
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$this->_error=challenge ;
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return challenge ;
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}
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|
$challenge=trim($challenge);
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$challenge = base64_decode( trim($challenge) );
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$cram = &Auth_SASL::factory('crammd5');
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if ( PEAR::isError($resp=$cram->getResponse( $uid , $pwd , $challenge ) ) ) {
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$this->_error=$resp;
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return $resp;
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}
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$auth_str = base64_encode( $resp );
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if ( PEAR::isError($error = $this->_sendStringResponse( $auth_str ) ) ) {
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$this->_error=$error;
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return $error;
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}
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|
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}
|
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|
|
/**
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|
* Authenticates the user using the DIGEST-MD5 method.
|
|
*
|
|
* @param string $uid The userid to authenticate as.
|
|
* @param string $pwd The password to authenticate with.
|
|
* @param string $euser The effective uid to authenticate as.
|
|
*
|
|
* @return array Returns an array containing the response
|
|
*
|
|
* @access private
|
|
* @since 1.0
|
|
*/
|
|
function _authDigest_MD5($uid, $pwd, $euser)
|
|
{
|
|
if ( PEAR::isError( $challenge = $this->_doCmd('AUTHENTICATE "DIGEST-MD5"') ) ) {
|
|
$this->_error=challenge ;
|
|
return challenge ;
|
|
}
|
|
$challenge = base64_decode( $challenge );
|
|
$digest = &Auth_SASL::factory('digestmd5');
|
|
|
|
if(PEAR::isError($param=$digest->getResponse($uid, $pwd, $challenge, "localhost", "sieve" , $euser) )) {
|
|
return $param;
|
|
}
|
|
$auth_str = base64_encode($param);
|
|
|
|
if ( PEAR::isError($error = $this->_sendStringResponse( $auth_str ) ) ) {
|
|
$this->_error=$error;
|
|
return $error;
|
|
}
|
|
|
|
if ( PEAR::isError( $challenge = $this->_doCmd() ) ) {
|
|
$this->_error=$challenge ;
|
|
return $challenge ;
|
|
}
|
|
|
|
if( strtoupper(substr($challenge,0,2))== 'OK' ){
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* We don't use the protocol's third step because SIEVE doesn't allow
|
|
* subsequent authentication, so we just silently ignore it.
|
|
*/
|
|
if ( PEAR::isError($error = $this->_sendStringResponse( '' ) ) ) {
|
|
$this->_error=$error;
|
|
return $error;
|
|
}
|
|
|
|
if (PEAR::isError($res = $this->_doCmd() )) {
|
|
return $res;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes a script from the server
|
|
*
|
|
* @access private
|
|
* @param string $scriptname Name of the script to delete
|
|
* @return mixed True on success, PEAR_Error otherwise
|
|
*/
|
|
function _cmdDeleteScript($scriptname)
|
|
{
|
|
if (NET_SIEVE_STATE_TRANSACTION != $this->_state) {
|
|
$msg='Not currently in AUTHORISATION state';
|
|
$code=1;
|
|
return $this->_raiseError($msg,$code);
|
|
}
|
|
if (PEAR::isError($res = $this->_doCmd(sprintf('DELETESCRIPT "%s"', $scriptname) ) )) {
|
|
return $res;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Retrieves the contents of the named script
|
|
*
|
|
* @access private
|
|
* @param string $scriptname Name of the script to retrieve
|
|
* @return mixed The script if successful, PEAR_Error otherwise
|
|
*/
|
|
function _cmdGetScript($scriptname)
|
|
{
|
|
if (NET_SIEVE_STATE_TRANSACTION != $this->_state) {
|
|
$msg='Not currently in AUTHORISATION state';
|
|
$code=1;
|
|
return $this->_raiseError($msg,$code);
|
|
}
|
|
|
|
if (PEAR::isError($res = $this->_doCmd(sprintf('GETSCRIPT "%s"', $scriptname) ) ) ) {
|
|
return $res;
|
|
}
|
|
|
|
return preg_replace('/{[0-9]+}\r\n/', '', $res);
|
|
}
|
|
|
|
/**
|
|
* Sets the ACTIVE script, ie the one that gets run on new mail
|
|
* by the server
|
|
*
|
|
* @access private
|
|
* @param string $scriptname The name of the script to mark as active
|
|
* @return mixed True on success, PEAR_Error otherwise
|
|
*/
|
|
function _cmdSetActive($scriptname)
|
|
{
|
|
if (NET_SIEVE_STATE_TRANSACTION != $this->_state) {
|
|
$msg='Not currently in AUTHORISATION state';
|
|
$code=1;
|
|
return $this->_raiseError($msg,$code);
|
|
}
|
|
|
|
if (PEAR::isError($res = $this->_doCmd(sprintf('SETACTIVE "%s"', $scriptname) ) ) ) {
|
|
return $res;
|
|
}
|
|
|
|
$this->_activeScript = $scriptname;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Sends the LISTSCRIPTS command
|
|
*
|
|
* @access private
|
|
* @return mixed Two item array of scripts, and active script on success,
|
|
* PEAR_Error otherwise.
|
|
*/
|
|
function _cmdListScripts()
|
|
{
|
|
if (NET_SIEVE_STATE_TRANSACTION != $this->_state) {
|
|
$msg='Not currently in AUTHORISATION state';
|
|
$code=1;
|
|
return $this->_raiseError($msg,$code);
|
|
}
|
|
|
|
$scripts = array();
|
|
$activescript = null;
|
|
|
|
if (PEAR::isError($res = $this->_doCmd('LISTSCRIPTS'))) {
|
|
return $res;
|
|
}
|
|
|
|
$res = explode("\r\n", $res);
|
|
|
|
foreach ($res as $value) {
|
|
if (preg_match('/^"(.*)"( ACTIVE)?$/i', $value, $matches)) {
|
|
$scripts[] = $matches[1];
|
|
if (!empty($matches[2])) {
|
|
$activescript = $matches[1];
|
|
}
|
|
}
|
|
}
|
|
|
|
return array($scripts, $activescript);
|
|
}
|
|
|
|
/**
|
|
* Sends the PUTSCRIPT command to add a script to
|
|
* the server.
|
|
*
|
|
* @access private
|
|
* @param string $scriptname Name of the new script
|
|
* @param string $scriptdata The new script
|
|
* @return mixed True on success, PEAR_Error otherwise
|
|
*/
|
|
function _cmdPutScript($scriptname, $scriptdata)
|
|
{
|
|
if (NET_SIEVE_STATE_TRANSACTION != $this->_state) {
|
|
$msg='Not currently in TRANSACTION state';
|
|
$code=1;
|
|
return $this->_raiseError($msg,$code);
|
|
}
|
|
|
|
$stringLength = $this->_getLineLength($scriptdata);
|
|
|
|
if (PEAR::isError($res = $this->_doCmd(sprintf("PUTSCRIPT \"%s\" {%d+}\r\n%s", $scriptname, $stringLength, $scriptdata) ))) {
|
|
return $res;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Sends the LOGOUT command and terminates the connection
|
|
*
|
|
* @access private
|
|
* @param boolean $sendLogoutCMD True to send LOGOUT command before disconnecting
|
|
* @return mixed True on success, PEAR_Error otherwise
|
|
*/
|
|
function _cmdLogout($sendLogoutCMD=true)
|
|
{
|
|
if (NET_SIEVE_STATE_DISCONNECTED === $this->_state) {
|
|
$msg='Not currently connected';
|
|
$code=1;
|
|
return $this->_raiseError($msg,$code);
|
|
//return PEAR::raiseError('Not currently connected');
|
|
}
|
|
|
|
if($sendLogoutCMD){
|
|
if (PEAR::isError($res = $this->_doCmd('LOGOUT'))) {
|
|
return $res;
|
|
}
|
|
}
|
|
|
|
$this->_sock->disconnect();
|
|
$this->_state = NET_SIEVE_STATE_DISCONNECTED;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Sends the CAPABILITY command
|
|
*
|
|
* @access private
|
|
* @return mixed True on success, PEAR_Error otherwise
|
|
*/
|
|
function _cmdCapability()
|
|
{
|
|
if (NET_SIEVE_STATE_DISCONNECTED === $this->_state) {
|
|
$msg='Not currently connected';
|
|
$code=1;
|
|
return $this->_raiseError($msg,$code);
|
|
}
|
|
|
|
if (PEAR::isError($res = $this->_doCmd('CAPABILITY'))) {
|
|
return $res;
|
|
}
|
|
$this->_parseCapability($res);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Checks if the server has space to store the script
|
|
* by the server
|
|
*
|
|
* @param string $scriptname The name of the script to mark as active
|
|
* @param integer $size The size of the script
|
|
* @return mixed True on success, PEAR_Error otherwise
|
|
*/
|
|
function haveSpace($scriptname,$size)
|
|
{
|
|
if (NET_SIEVE_STATE_TRANSACTION != $this->_state) {
|
|
$msg='Not currently in TRANSACTION state';
|
|
$code=1;
|
|
return $this->_raiseError($msg,$code);
|
|
}
|
|
|
|
if (PEAR::isError($res = $this->_doCmd(sprintf('HAVESPACE "%s" %d', $scriptname, $size) ) ) ) {
|
|
return $res;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Parses the response from the capability command. Stores
|
|
* the result in $this->_capability
|
|
*
|
|
* @access private
|
|
* @param string $data The response from the capability command
|
|
*/
|
|
function _parseCapability($data)
|
|
{
|
|
$data = preg_split('/\r?\n/', $data, -1, PREG_SPLIT_NO_EMPTY);
|
|
|
|
for ($i = 0; $i < count($data); $i++) {
|
|
if (preg_match('/^"([a-z]+)"( "(.*)")?$/i', $data[$i], $matches)) {
|
|
switch (strtolower($matches[1])) {
|
|
case 'implementation':
|
|
$this->_capability['implementation'] = $matches[3];
|
|
break;
|
|
|
|
case 'sasl':
|
|
$this->_capability['sasl'] = preg_split('/\s+/', $matches[3]);
|
|
break;
|
|
|
|
case 'sieve':
|
|
$this->_capability['extensions'] = preg_split('/\s+/', $matches[3]);
|
|
break;
|
|
|
|
case 'starttls':
|
|
$this->_capability['starttls'] = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sends a command to the server
|
|
*
|
|
* @access private
|
|
* @param string $cmd The command to send
|
|
*/
|
|
function _sendCmd($cmd)
|
|
{
|
|
$status = $this->_sock->getStatus();
|
|
if (PEAR::isError($status) || $status['eof']) {
|
|
return new PEAR_Error( 'Failed to write to socket: (connection lost!) ' );
|
|
}
|
|
if ( PEAR::isError( $error = $this->_sock->write( $cmd . "\r\n" ) ) ) {
|
|
return new PEAR_Error( 'Failed to write to socket: ' . $error->getMessage() );
|
|
}
|
|
|
|
if( $this->_debug ){
|
|
// C: means this data was sent by the client (this class)
|
|
echo "C:$cmd\n";
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Sends a string response to the server
|
|
*
|
|
* @access private
|
|
* @param string $cmd The command to send
|
|
*/
|
|
function _sendStringResponse($str)
|
|
{
|
|
$response='{' . $this->_getLineLength($str) . "+}\r\n" . $str ;
|
|
return $this->_sendCmd($response);
|
|
}
|
|
|
|
function _recvLn()
|
|
{
|
|
$lastline='';
|
|
if (PEAR::isError( $lastline = $this->_sock->gets( 8192 ) ) ) {
|
|
return new PEAR_Error( 'Failed to write to socket: ' . $lastline->getMessage() );
|
|
}
|
|
$lastline=rtrim($lastline);
|
|
if($this->_debug){
|
|
// S: means this data was sent by the IMAP Server
|
|
echo "S:$lastline\n" ;
|
|
}
|
|
|
|
if( $lastline === '' ) {
|
|
return new PEAR_Error( 'Failed to receive from the socket' );
|
|
}
|
|
|
|
return $lastline;
|
|
}
|
|
|
|
/**
|
|
* Send a command and retrieves a response from the server.
|
|
*
|
|
*
|
|
* @access private
|
|
* @param string $cmd The command to send
|
|
* @return mixed Reponse string if an OK response, PEAR_Error if a NO response
|
|
*/
|
|
function _doCmd($cmd = '' )
|
|
{
|
|
$referralCount=0;
|
|
while($referralCount < $this->_maxReferralCount ){
|
|
|
|
if($cmd != '' ){
|
|
if(PEAR::isError($error = $this->_sendCmd($cmd) )) {
|
|
return $error;
|
|
}
|
|
}
|
|
$response = '';
|
|
|
|
while (true) {
|
|
if(PEAR::isError( $line=$this->_recvLn() )){
|
|
return $line;
|
|
}
|
|
if ('ok' === strtolower(substr($line, 0, 2))) {
|
|
$response .= $line;
|
|
return rtrim($response);
|
|
|
|
} elseif ('no' === strtolower(substr($line, 0, 2))) {
|
|
// Check for string literal error message
|
|
if (preg_match('/^no {([0-9]+)\+?}/i', $line, $matches)) {
|
|
$line .= str_replace("\r\n", ' ', $this->_sock->read($matches[1] + 2 ));
|
|
if($this->_debug){
|
|
echo "S:$line\n";
|
|
}
|
|
}
|
|
$msg=trim($response . substr($line, 2));
|
|
$code=3;
|
|
return $this->_raiseError($msg,$code);
|
|
} elseif ('bye' === strtolower(substr($line, 0, 3))) {
|
|
|
|
if(PEAR::isError($error = $this->disconnect(false) ) ){
|
|
$msg="Can't handle bye, The error was= " . $error->getMessage() ;
|
|
$code=4;
|
|
return $this->_raiseError($msg,$code);
|
|
}
|
|
//if (preg_match('/^bye \(referral "([^"]+)/i', $line, $matches)) {
|
|
if (preg_match('/^bye \(referral "(sieve:\/\/)?([^"]+)/i', $line, $matches)) {
|
|
// Check for referral, then follow it. Otherwise, carp an error.
|
|
// Replace the old host with the referral host preserving any protocol prefix
|
|
$this->_data['host'] = preg_replace('/\w+(?!(\w|\:\/\/)).*/',$matches[2],$this->_data['host']);
|
|
if (PEAR::isError($error = $this->_handleConnectAndLogin() ) ){
|
|
$msg="Can't follow referral to " . $this->_data['host'] . ", The error was= " . $error->getMessage() ;
|
|
$code=5;
|
|
return $this->_raiseError($msg,$code);
|
|
}
|
|
break;
|
|
// Retry the command
|
|
if(PEAR::isError($error = $this->_sendCmd($cmd) )) {
|
|
return $error;
|
|
}
|
|
continue;
|
|
}
|
|
$msg=trim($response . $line);
|
|
$code=6;
|
|
return $this->_raiseError($msg,$code);
|
|
} elseif (preg_match('/^{([0-9]+)\+?}/i', $line, $matches)) {
|
|
// Matches String Responses.
|
|
//$line = str_replace("\r\n", ' ', $this->_sock->read($matches[1] + 2 ));
|
|
$str_size = $matches[1] + 2;
|
|
$line = '';
|
|
$line_length = 0;
|
|
while ($line_length < $str_size) {
|
|
$line .= $this->_sock->read($str_size - $line_length);
|
|
$line_length = $this->_getLineLength($line);
|
|
}
|
|
if($this->_debug){
|
|
echo "S:$line\n";
|
|
}
|
|
// receive the pending OK
|
|
$this->_recvLn();
|
|
return $line;
|
|
}
|
|
$response .= $line . "\r\n";
|
|
$referralCount++;
|
|
}
|
|
}
|
|
$msg="Max referral count reached ($referralCount times) Cyrus murder loop error?";
|
|
$code=7;
|
|
return $this->_raiseError($msg,$code);
|
|
}
|
|
|
|
/**
|
|
* Sets the debug state
|
|
*
|
|
* @param boolean $debug
|
|
* @return void
|
|
*/
|
|
function setDebug($debug = true)
|
|
{
|
|
$this->_debug = $debug;
|
|
}
|
|
|
|
/**
|
|
* Disconnect from the Sieve server
|
|
*
|
|
* @param string $scriptname The name of the script to be set as active
|
|
* @return mixed true on success, PEAR_Error on failure
|
|
*/
|
|
function disconnect($sendLogoutCMD=true)
|
|
{
|
|
return $this->_cmdLogout($sendLogoutCMD);
|
|
}
|
|
|
|
/**
|
|
* Returns the name of the best authentication method that the server
|
|
* has advertised.
|
|
*
|
|
* @param string if !=null,authenticate with this method ($userMethod).
|
|
*
|
|
* @return mixed Returns a string containing the name of the best
|
|
* supported authentication method or a PEAR_Error object
|
|
* if a failure condition is encountered.
|
|
* @access private
|
|
* @since 1.0
|
|
*/
|
|
function _getBestAuthMethod($userMethod = null)
|
|
{
|
|
if( isset($this->_capability['sasl']) ){
|
|
$serverMethods=$this->_capability['sasl'];
|
|
}else{
|
|
// if the server don't send an sasl capability fallback to login auth
|
|
//return 'LOGIN';
|
|
return new PEAR_Error("This server don't support any Auth methods SASL problem?");
|
|
}
|
|
|
|
if($userMethod != null ){
|
|
$methods = array();
|
|
$methods[] = $userMethod;
|
|
}else{
|
|
|
|
$methods = $this->supportedAuthMethods;
|
|
}
|
|
if( ($methods != null) && ($serverMethods != null)){
|
|
foreach ( $methods as $method ) {
|
|
if ( in_array( $method , $serverMethods ) ) {
|
|
return $method;
|
|
}
|
|
}
|
|
$serverMethods=implode(',' , $serverMethods );
|
|
$myMethods=implode(',' ,$this->supportedAuthMethods);
|
|
return new PEAR_Error("$method NOT supported authentication method!. This server " .
|
|
"supports these methods= $serverMethods, but I support $myMethods");
|
|
}else{
|
|
return new PEAR_Error("This server don't support any Auth methods");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return the list of extensions the server supports
|
|
*
|
|
* @return mixed array on success, PEAR_Error on failure
|
|
*/
|
|
function getExtensions()
|
|
{
|
|
if (NET_SIEVE_STATE_DISCONNECTED === $this->_state) {
|
|
$msg='Not currently connected';
|
|
$code=7;
|
|
return $this->_raiseError($msg,$code);
|
|
}
|
|
|
|
return $this->_capability['extensions'];
|
|
}
|
|
|
|
/**
|
|
* Return true if tyhe server has that extension
|
|
*
|
|
* @param string the extension to compare
|
|
* @return mixed array on success, PEAR_Error on failure
|
|
*/
|
|
function hasExtension($extension)
|
|
{
|
|
if (NET_SIEVE_STATE_DISCONNECTED === $this->_state) {
|
|
$msg='Not currently connected';
|
|
$code=7;
|
|
return $this->_raiseError($msg,$code);
|
|
}
|
|
|
|
if(is_array($this->_capability['extensions'] ) ){
|
|
foreach( $this->_capability['extensions'] as $ext){
|
|
if( trim( strtolower( $ext ) ) === trim( strtolower( $extension ) ) )
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Return the list of auth methods the server supports
|
|
*
|
|
* @return mixed array on success, PEAR_Error on failure
|
|
*/
|
|
function getAuthMechs()
|
|
{
|
|
if (NET_SIEVE_STATE_DISCONNECTED === $this->_state) {
|
|
$msg='Not currently connected';
|
|
$code=7;
|
|
return $this->_raiseError($msg,$code);
|
|
}
|
|
if(!isset($this->_capability['sasl']) ){
|
|
$this->_capability['sasl']=array();
|
|
}
|
|
return $this->_capability['sasl'];
|
|
}
|
|
|
|
/**
|
|
* Return true if the server has that extension
|
|
*
|
|
* @param string the extension to compare
|
|
* @return mixed array on success, PEAR_Error on failure
|
|
*/
|
|
function hasAuthMech($method)
|
|
{
|
|
if (NET_SIEVE_STATE_DISCONNECTED === $this->_state) {
|
|
$msg='Not currently connected';
|
|
$code=7;
|
|
return $this->_raiseError($msg,$code);
|
|
//return PEAR::raiseError('Not currently connected');
|
|
}
|
|
|
|
if(is_array($this->_capability['sasl'] ) ){
|
|
foreach( $this->_capability['sasl'] as $ext){
|
|
if( trim( strtolower( $ext ) ) === trim( strtolower( $method ) ) )
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Return true if the TLS negotiation was successful
|
|
*
|
|
* @access private
|
|
* @return mixed true on success, PEAR_Error on failure
|
|
*/
|
|
function _startTLS()
|
|
{
|
|
if (PEAR::isError($res = $this->_doCmd("STARTTLS"))) {
|
|
return $res;
|
|
}
|
|
|
|
if(stream_socket_enable_crypto($this->_sock->fp, true, STREAM_CRYPTO_METHOD_TLS_CLIENT) == false) {
|
|
$msg='Failed to establish TLS connection';
|
|
$code=2;
|
|
return $this->_raiseError($msg,$code);
|
|
}
|
|
|
|
if($this->_debug === true) {
|
|
echo "STARTTLS Negotiation Successful\n";
|
|
}
|
|
|
|
// RFC says we need to query the server capabilities again
|
|
if(PEAR::isError($res = $this->_cmdCapability() )) {
|
|
$msg='Failed to connect, server said: ' . $res->getMessage();
|
|
$code=2;
|
|
return $this->_raiseError($msg,$code);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function _getLineLength($string) {
|
|
if (extension_loaded('mbstring') || @dl(PHP_SHLIB_PREFIX.'mbstring.'.PHP_SHLIB_SUFFIX)) {
|
|
return mb_strlen($string,'latin1');
|
|
} else {
|
|
return strlen($string);
|
|
}
|
|
}
|
|
}
|
|
?>
|