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730 lines
19 KiB
PHP
730 lines
19 KiB
PHP
<?php
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/*
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Classes for managesieve operations (using PEAR::Net_Sieve)
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Author: Aleksander Machniak <alec@alec.pl>
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$Id$
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*/
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// Sieve Language Basics: http://www.ietf.org/rfc/rfc5228.txt
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define('SIEVE_ERROR_CONNECTION', 1);
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define('SIEVE_ERROR_LOGIN', 2);
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define('SIEVE_ERROR_NOT_EXISTS', 3); // script not exists
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define('SIEVE_ERROR_INSTALL', 4); // script installation
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define('SIEVE_ERROR_ACTIVATE', 5); // script activation
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define('SIEVE_ERROR_OTHER', 255); // other/unknown error
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class rcube_sieve
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{
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var $sieve; // Net_Sieve object
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var $error = false; // error flag
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var $list = array(); // scripts list
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public $script; // rcube_sieve_script object
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private $disabled; // array of disabled extensions
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/**
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* Object constructor
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*
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* @param string Username (to managesieve login)
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* @param string Password (to managesieve login)
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* @param string Managesieve server hostname/address
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* @param string Managesieve server port number
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* @param string Enable/disable TLS use
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* @param array Disabled extensions
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*/
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public function __construct($username, $password='', $host='localhost', $port=2000, $usetls=true, $disabled=array())
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{
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$this->sieve = new Net_Sieve();
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// $this->sieve->setDebug();
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if (PEAR::isError($this->sieve->connect($host, $port, NULL, $usetls)))
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return $this->_set_error(SIEVE_ERROR_CONNECTION);
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if (PEAR::isError($this->sieve->login($username, $password)))
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return $this->_set_error(SIEVE_ERROR_LOGIN);
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$this->disabled = $disabled;
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$this->_get_script();
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}
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/**
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* Getter for error code
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*/
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public function error()
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{
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return $this->error ? $this->error : false;
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}
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public function save()
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{
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$script = $this->script->as_text();
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if (!$script)
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$script = '/* empty script */';
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if (PEAR::isError($this->sieve->installScript('roundcube', $script)))
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return $this->_set_error(SIEVE_ERROR_INSTALL);
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if (PEAR::isError($this->sieve->setActive('roundcube')))
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return $this->_set_error(SIEVE_ERROR_ACTIVATE);
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return true;
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}
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public function get_extensions()
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{
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if ($this->sieve) {
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$ext = $this->sieve->getExtensions();
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if ($this->script) {
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$supported = $this->script->get_extensions();
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foreach ($ext as $idx => $ext_name)
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if (!in_array($ext_name, $supported))
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unset($ext[$idx]);
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}
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return array_values($ext);
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}
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}
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private function _get_script()
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{
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if (!$this->sieve)
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return false;
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$this->list = $this->sieve->listScripts();
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if (PEAR::isError($this->list))
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return $this->_set_error(SIEVE_ERROR_OTHER);
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if (in_array('roundcube', $this->list))
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{
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$script = $this->sieve->getScript('roundcube');
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if (PEAR::isError($script))
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return $this->_set_error(SIEVE_ERROR_OTHER);
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}
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// import scripts from squirrelmail
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elseif (in_array('phpscript', $this->list))
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{
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$script = $this->sieve->getScript('phpscript');
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$script = $this->_convert_from_squirrel_rules($script);
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$this->script = new rcube_sieve_script($script);
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$this->save();
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$script = $this->sieve->getScript('roundcube');
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if (PEAR::isError($script))
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return $this->_set_error(SIEVE_ERROR_OTHER);
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}
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else
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{
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$this->_set_error(SIEVE_ERROR_NOT_EXISTS);
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$script = '';
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}
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$this->script = new rcube_sieve_script($script, $this->disabled);
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}
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private function _convert_from_squirrel_rules($script)
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{
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$i = 0;
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$name = array();
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// tokenize rules
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if ($tokens = preg_split('/(#START_SIEVE_RULE.*END_SIEVE_RULE)\n/', $script, -1, PREG_SPLIT_DELIM_CAPTURE))
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foreach($tokens as $token)
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{
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if (preg_match('/^#START_SIEVE_RULE.*/', $token, $matches))
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{
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$name[$i] = "unnamed rule ".($i+1);
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$content .= "# rule:[".$name[$i]."]\n";
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}
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elseif (isset($name[$i]))
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{
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$content .= "if ".$token."\n";
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$i++;
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}
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}
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return $content;
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}
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private function _set_error($error)
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{
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$this->error = $error;
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return false;
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}
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}
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class rcube_sieve_script
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{
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var $content = array(); // script rules array
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private $supported = array( // extensions supported by class
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'fileinto',
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'reject',
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'ereject',
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'vacation', // RFC5230
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// TODO: (most wanted first) body, imapflags, notify, regex
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);
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/**
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* Object constructor
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*
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* @param string Script's text content
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* @param array Disabled extensions
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*/
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public function __construct($script, $disabled)
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{
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global $CONFIG;
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if (!empty($disabled))
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foreach ($disabled as $ext)
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if (($idx = array_search($ext, $this->supported)) !== false)
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unset($this->supported[$idx]);
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$this->content = $this->_parse_text($script);
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}
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/**
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* Adds script contents as text to the script array (at the end)
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*
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* @param string Text script contents
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*/
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public function add_text($script)
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{
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$content = $this->_parse_text($script);
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$result = false;
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// check existsing script rules names
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foreach ($this->content as $idx => $elem)
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$names[$elem['name']] = $idx;
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foreach ($content as $elem)
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if (!isset($names[$elem['name']]))
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{
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array_push($this->content, $elem);
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$result = true;
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}
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return $result;
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}
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/**
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* Adds rule to the script (at the end)
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*
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* @param string Rule name
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* @param array Rule content (as array)
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*/
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public function add_rule($content)
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{
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// TODO: check this->supported
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array_push($this->content, $content);
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return sizeof($this->content)-1;
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}
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public function delete_rule($index)
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{
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if(isset($this->content[$index]))
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{
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unset($this->content[$index]);
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return true;
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}
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return false;
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}
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public function size()
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{
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return sizeof($this->content);
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}
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public function update_rule($index, $content)
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{
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// TODO: check this->supported
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if ($this->content[$index])
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{
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$this->content[$index] = $content;
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return $index;
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}
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return false;
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}
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/**
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* Returns script as text
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*/
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public function as_text()
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{
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$script = '';
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$exts = array();
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// rules
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foreach ($this->content as $idx => $rule)
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{
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$extension = '';
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$tests = array();
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$i = 0;
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// header
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$script .= '# rule:[' . $rule['name'] . "]\n";
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// constraints expressions
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foreach ($rule['tests'] as $test)
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{
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$tests[$i] = '';
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switch ($test['test'])
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{
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case 'size':
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$tests[$i] .= ($test['not'] ? 'not ' : '');
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$tests[$i] .= 'size :' . ($test['type']=='under' ? 'under ' : 'over ') . $test['arg'];
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break;
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case 'true':
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$tests[$i] .= ($test['not'] ? 'not true' : 'true');
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break;
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case 'exists':
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$tests[$i] .= ($test['not'] ? 'not ' : '');
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if (is_array($test['arg']))
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$tests[$i] .= 'exists ["' . implode('", "', $this->_escape_string($test['arg'])) . '"]';
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else
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$tests[$i] .= 'exists "' . $this->_escape_string($test['arg']) . '"';
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break;
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case 'header':
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$tests[$i] .= ($test['not'] ? 'not ' : '');
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$tests[$i] .= 'header :' . $test['type'];
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if (is_array($test['arg1']))
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$tests[$i] .= ' ["' . implode('", "', $this->_escape_string($test['arg1'])) . '"]';
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else
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$tests[$i] .= ' "' . $this->_escape_string($test['arg1']) . '"';
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if (is_array($test['arg2']))
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$tests[$i] .= ' ["' . implode('", "', $this->_escape_string($test['arg2'])) . '"]';
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else
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$tests[$i] .= ' "' . $this->_escape_string($test['arg2']) . '"';
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break;
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}
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$i++;
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}
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$script .= ($idx>0 ? 'els' : '').($rule['join'] ? 'if allof (' : 'if anyof (');
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if (sizeof($tests) > 1)
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$script .= implode(",\n\t", $tests);
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elseif (sizeof($tests))
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$script .= $tests[0];
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else
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$script .= 'true';
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$script .= ")\n{\n";
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// action(s)
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foreach ($rule['actions'] as $action)
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switch ($action['type'])
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{
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case 'fileinto':
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$extension = 'fileinto';
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$script .= "\tfileinto \"" . $this->_escape_string($action['target']) . "\";\n";
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break;
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case 'redirect':
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$script .= "\tredirect \"" . $this->_escape_string($action['target']) . "\";\n";
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break;
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case 'reject':
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case 'ereject':
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$extension = $action['type'];
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if (strpos($action['target'], "\n")!==false)
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$script .= "\t".$action['type']." text:\n" . $action['target'] . "\n.\n;\n";
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else
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$script .= "\t".$action['type']." \"" . $this->_escape_string($action['target']) . "\";\n";
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break;
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case 'keep':
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case 'discard':
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case 'stop':
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$script .= "\t" . $action['type'] .";\n";
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break;
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case 'vacation':
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$extension = 'vacation';
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$script .= "\tvacation";
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if ($action['days'])
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$script .= " :days " . $action['days'];
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if ($action['addresses'])
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$script .= " :addresses " . $this->_print_list($action['addresses']);
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if ($action['subject'])
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$script .= " :subject \"" . $this->_escape_string($action['subject']) . "\"";
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if ($action['handle'])
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$script .= " :handle \"" . $this->_escape_string($action['handle']) . "\"";
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if ($action['from'])
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$script .= " :from \"" . $this->_escape_string($action['from']) . "\"";
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if ($action['mime'])
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$script .= " :mime";
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if (strpos($action['reason'], "\n")!==false)
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$script .= " text:\n" . $action['reason'] . "\n.\n;\n";
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else
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$script .= " \"" . $this->_escape_string($action['reason']) . "\";\n";
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break;
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}
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$script .= "}\n";
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if ($extension && !isset($exts[$extension]))
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$exts[$extension] = $extension;
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}
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// requires
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if (sizeof($exts))
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$script = 'require ["' . implode('","', $exts) . "\"];\n" . $script;
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return $script;
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}
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/**
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* Returns script object
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*
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*/
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public function as_array()
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{
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return $this->content;
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}
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/**
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* Returns array of supported extensions
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*
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*/
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public function get_extensions()
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{
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return array_values($this->supported);
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}
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/**
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* Converts text script to rules array
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*
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* @param string Text script
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*/
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private function _parse_text($script)
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{
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$i = 0;
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$content = array();
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// remove C comments
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$script = preg_replace('|/\*.*?\*/|sm', '', $script);
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// tokenize rules
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if ($tokens = preg_split('/(# rule:\[.*\])\r?\n/', $script, -1, PREG_SPLIT_DELIM_CAPTURE))
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foreach($tokens as $token)
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{
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if (preg_match('/^# rule:\[(.*)\]/', $token, $matches))
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{
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$content[$i]['name'] = $matches[1];
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}
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elseif (isset($content[$i]['name']) && sizeof($content[$i]) == 1)
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{
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if ($rule = $this->_tokenize_rule($token))
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{
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$content[$i] = array_merge($content[$i], $rule);
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$i++;
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}
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else // unknown rule format
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unset($content[$i]);
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}
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}
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return $content;
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}
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/**
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* Convert text script fragment to rule object
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*
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* @param string Text rule
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*/
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private function _tokenize_rule($content)
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{
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$result = NULL;
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if (preg_match('/^(if|elsif|else)\s+((allof|anyof|exists|header|not|size)\s+(.*))\s+\{(.*)\}$/sm', trim($content), $matches))
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{
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list($tests, $join) = $this->_parse_tests(trim($matches[2]));
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$actions = $this->_parse_actions(trim($matches[5]));
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if ($tests && $actions)
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$result = array(
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'tests' => $tests,
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'actions' => $actions,
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'join' => $join,
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);
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}
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return $result;
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}
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/**
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* Parse body of actions section
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*
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* @param string Text body
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* @return array Array of parsed action type/target pairs
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*/
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private function _parse_actions($content)
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{
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$result = NULL;
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// supported actions
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$patterns[] = '^\s*discard;';
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$patterns[] = '^\s*keep;';
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$patterns[] = '^\s*stop;';
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$patterns[] = '^\s*redirect\s+(.*?[^\\\]);';
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if (in_array('fileinto', $this->supported))
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$patterns[] = '^\s*fileinto\s+(.*?[^\\\]);';
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if (in_array('reject', $this->supported)) {
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$patterns[] = '^\s*reject\s+text:(.*)\n\.\n;';
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$patterns[] = '^\s*reject\s+(.*?[^\\\]);';
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$patterns[] = '^\s*ereject\s+text:(.*)\n\.\n;';
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$patterns[] = '^\s*ereject\s+(.*?[^\\\]);';
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}
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if (in_array('vacation', $this->supported))
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$patterns[] = '^\s*vacation\s+(.*?[^\\\]);';
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$pattern = '/(' . implode('$)|(', $patterns) . '$)/ms';
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// parse actions body
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if (preg_match_all($pattern, $content, $mm, PREG_SET_ORDER))
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{
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foreach ($mm as $m)
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{
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$content = trim($m[0]);
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if(preg_match('/^(discard|keep|stop)/', $content, $matches))
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{
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$result[] = array('type' => $matches[1]);
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}
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elseif(preg_match('/^fileinto/', $content))
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{
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$result[] = array('type' => 'fileinto', 'target' => $this->_parse_string($m[sizeof($m)-1]));
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}
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elseif(preg_match('/^redirect/', $content))
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{
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$result[] = array('type' => 'redirect', 'target' => $this->_parse_string($m[sizeof($m)-1]));
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}
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elseif(preg_match('/^(reject|ereject)\s+(.*);$/sm', $content, $matches))
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{
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$result[] = array('type' => $matches[1], 'target' => $this->_parse_string($matches[2]));
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}
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elseif(preg_match('/^vacation\s+(.*);$/sm', $content, $matches))
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{
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$vacation = array('type' => 'vacation');
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if (preg_match('/:(days)\s+([0-9]+)/', $content, $vm)) {
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$vacation['days'] = $vm[2];
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$content = preg_replace('/:(days)\s+([0-9]+)/', '', $content);
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}
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if (preg_match('/:(subject)\s+(".*?[^\\\]")/', $content, $vm)) {
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$vacation['subject'] = $vm[2];
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$content = preg_replace('/:(subject)\s+(".*?[^\\\]")/', '', $content);
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}
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if (preg_match('/:(addresses)\s+\[(.*?[^\\\])\]/', $content, $vm)) {
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$vacation['addresses'] = $this->_parse_list($vm[2]);
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$content = preg_replace('/:(addresses)\s+\[(.*?[^\\\])\]/', '', $content);
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}
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if (preg_match('/:(handle)\s+(".*?[^\\\]")/', $content, $vm)) {
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$vacation['handle'] = $vm[2];
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$content = preg_replace('/:(handle)\s+(".*?[^\\\]")/', '', $content);
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}
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if (preg_match('/:(from)\s+(".*?[^\\\]")/', $content, $vm)) {
|
|
$vacation['from'] = $vm[2];
|
|
$content = preg_replace('/:(from)\s+(".*?[^\\\]")/', '', $content);
|
|
}
|
|
$content = preg_replace('/^vacation/', '', $content);
|
|
$content = preg_replace('/;$/', '', $content);
|
|
$content = trim($content);
|
|
if (preg_match('/^:(mime)/', $content, $vm)) {
|
|
$vacation['mime'] = true;
|
|
$content = preg_replace('/^:mime/', '', $content);
|
|
}
|
|
|
|
$vacation['reason'] = $this->_parse_string($content);
|
|
|
|
$result[] = $vacation;
|
|
}
|
|
}
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Parse test/conditions section
|
|
*
|
|
* @param string Text
|
|
*/
|
|
|
|
private function _parse_tests($content)
|
|
{
|
|
$result = NULL;
|
|
|
|
// lists
|
|
if (preg_match('/^(allof|anyof)\s+\((.*)\)$/sm', $content, $matches))
|
|
{
|
|
$content = $matches[2];
|
|
$join = $matches[1]=='allof' ? true : false;
|
|
}
|
|
else
|
|
$join = false;
|
|
|
|
// supported tests regular expressions
|
|
// TODO: comparators, envelope
|
|
$patterns[] = '(not\s+)?(exists)\s+\[(.*?[^\\\])\]';
|
|
$patterns[] = '(not\s+)?(exists)\s+(".*?[^\\\]")';
|
|
$patterns[] = '(not\s+)?(true)';
|
|
$patterns[] = '(not\s+)?(size)\s+:(under|over)\s+([0-9]+[KGM]{0,1})';
|
|
$patterns[] = '(not\s+)?(header)\s+:(contains|is|matches)\s+\[(.*?[^\\\]")\]\s+\[(.*?[^\\\]")\]';
|
|
$patterns[] = '(not\s+)?(header)\s+:(contains|is|matches)\s+(".*?[^\\\]")\s+(".*?[^\\\]")';
|
|
$patterns[] = '(not\s+)?(header)\s+:(contains|is|matches)\s+\[(.*?[^\\\]")\]\s+(".*?[^\\\]")';
|
|
$patterns[] = '(not\s+)?(header)\s+:(contains|is|matches)\s+(".*?[^\\\]")\s+\[(.*?[^\\\]")\]';
|
|
|
|
// join patterns...
|
|
$pattern = '/(' . implode(')|(', $patterns) . ')/';
|
|
|
|
// ...and parse tests list
|
|
if (preg_match_all($pattern, $content, $matches, PREG_SET_ORDER))
|
|
{
|
|
foreach ($matches as $match)
|
|
{
|
|
$size = sizeof($match);
|
|
|
|
if (preg_match('/^(not\s+)?size/', $match[0]))
|
|
{
|
|
$result[] = array(
|
|
'test' => 'size',
|
|
'not' => $match[$size-4] ? true : false,
|
|
'type' => $match[$size-2], // under/over
|
|
'arg' => $match[$size-1], // value
|
|
);
|
|
}
|
|
elseif (preg_match('/^(not\s+)?header/', $match[0]))
|
|
{
|
|
$result[] = array(
|
|
'test' => 'header',
|
|
'not' => $match[$size-5] ? true : false,
|
|
'type' => $match[$size-3], // is/contains/matches
|
|
'arg1' => $this->_parse_list($match[$size-2]), // header(s)
|
|
'arg2' => $this->_parse_list($match[$size-1]), // string(s)
|
|
);
|
|
}
|
|
elseif (preg_match('/^(not\s+)?exists/', $match[0]))
|
|
{
|
|
$result[] = array(
|
|
'test' => 'exists',
|
|
'not' => $match[$size-3] ? true : false,
|
|
'arg' => $this->_parse_list($match[$size-1]), // header(s)
|
|
);
|
|
}
|
|
elseif (preg_match('/^(not\s+)?true/', $match[0]))
|
|
{
|
|
$result[] = array(
|
|
'test' => 'true',
|
|
'not' => $match[$size-2] ? true : false,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
return array($result, $join);
|
|
}
|
|
|
|
/**
|
|
* Parse string value
|
|
*
|
|
* @param string Text
|
|
*/
|
|
private function _parse_string($content)
|
|
{
|
|
$text = '';
|
|
$content = trim($content);
|
|
|
|
if (preg_match('/^text:(.*)\.$/sm', $content, $matches))
|
|
$text = trim($matches[1]);
|
|
elseif (preg_match('/^"(.*)"$/', $content, $matches))
|
|
$text = str_replace('\"', '"', $matches[1]);
|
|
|
|
return $text;
|
|
}
|
|
|
|
/**
|
|
* Escape special chars in string value
|
|
*
|
|
* @param string Text
|
|
*/
|
|
private function _escape_string($content)
|
|
{
|
|
$replace['/"/'] = '\\"';
|
|
|
|
if (is_array($content))
|
|
{
|
|
for ($x=0, $y=sizeof($content); $x<$y; $x++)
|
|
$content[$x] = preg_replace(array_keys($replace), array_values($replace), $content[$x]);
|
|
|
|
return $content;
|
|
}
|
|
else
|
|
return preg_replace(array_keys($replace), array_values($replace), $content);
|
|
}
|
|
|
|
/**
|
|
* Parse string or list of strings to string or array of strings
|
|
*
|
|
* @param string Text
|
|
*/
|
|
private function _parse_list($content)
|
|
{
|
|
$result = array();
|
|
|
|
for ($x=0, $len=strlen($content); $x<$len; $x++)
|
|
{
|
|
switch ($content[$x])
|
|
{
|
|
case '\\':
|
|
$str .= $content[++$x];
|
|
break;
|
|
case '"':
|
|
if (isset($str))
|
|
{
|
|
$result[] = $str;
|
|
unset($str);
|
|
}
|
|
else
|
|
$str = '';
|
|
break;
|
|
default:
|
|
if(isset($str))
|
|
$str .= $content[$x];
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (sizeof($result)>1)
|
|
return $result;
|
|
elseif (sizeof($result) == 1)
|
|
return $result[0];
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* Convert array of elements to list of strings
|
|
*
|
|
* @param string Text
|
|
*/
|
|
private function _print_list($list)
|
|
{
|
|
$list = (array) $list;
|
|
foreach($list as $idx => $val)
|
|
$list[$idx] = $this->_escape_string($val);
|
|
|
|
return '["' . implode('","', $list) . '"]';
|
|
}
|
|
}
|
|
|
|
?>
|