From 8d8f7a7b8e7ea8464aa807611b3db320fab12156 Mon Sep 17 00:00:00 2001
From: alecpl <alec@alec.pl>
Date: Thu, 05 Apr 2012 03:51:20 -0400
Subject: [PATCH] - Larry skin support

---
 plugins/managesieve/lib/rcube_sieve.php |  996 ++++++++++++++-------------------------------------------
 1 files changed, 254 insertions(+), 742 deletions(-)

diff --git a/plugins/managesieve/lib/rcube_sieve.php b/plugins/managesieve/lib/rcube_sieve.php
index 649967f..2ed2e54 100644
--- a/plugins/managesieve/lib/rcube_sieve.php
+++ b/plugins/managesieve/lib/rcube_sieve.php
@@ -1,61 +1,104 @@
 <?php
 
-/*
-  Classes for managesieve operations (using PEAR::Net_Sieve)
+/**
+ *  Classes for managesieve operations (using PEAR::Net_Sieve)
+ *
+ * Copyright (C) 2008-2011, The Roundcube Dev Team
+ * Copyright (C) 2011, Kolab Systems AG
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * $Id$
+ *
+ */
 
-  Author: Aleksander Machniak <alec@alec.pl>
-
-  $Id$
-
-*/
-
-//  Sieve Language Basics: http://www.ietf.org/rfc/rfc5228.txt
+// Managesieve Protocol: RFC5804
 
 define('SIEVE_ERROR_CONNECTION', 1);
 define('SIEVE_ERROR_LOGIN', 2);
-define('SIEVE_ERROR_NOT_EXISTS', 3);	// script not exists
-define('SIEVE_ERROR_INSTALL', 4);	// script installation
-define('SIEVE_ERROR_ACTIVATE', 5);	// script activation
-define('SIEVE_ERROR_DELETE', 6);	// script deletion
-define('SIEVE_ERROR_INTERNAL', 7);	// internal error
-define('SIEVE_ERROR_OTHER', 255);	// other/unknown error
+define('SIEVE_ERROR_NOT_EXISTS', 3);    // script not exists
+define('SIEVE_ERROR_INSTALL', 4);       // script installation
+define('SIEVE_ERROR_ACTIVATE', 5);      // script activation
+define('SIEVE_ERROR_DELETE', 6);        // script deletion
+define('SIEVE_ERROR_INTERNAL', 7);      // internal error
+define('SIEVE_ERROR_DEACTIVATE', 8);    // script activation
+define('SIEVE_ERROR_OTHER', 255);       // other/unknown error
 
 
 class rcube_sieve
 {
-    private $sieve;			// Net_Sieve object
-    private $error = false; 		// error flag 
-    private $list = array(); 		// scripts list 
+    private $sieve;                 // Net_Sieve object
+    private $error = false;         // error flag
+    private $list = array();        // scripts list
 
-    public $script;			// rcube_sieve_script object
-    public $current;			// name of currently loaded script
-    private $disabled;			// array of disabled extensions
+    public $script;                 // rcube_sieve_script object
+    public $current;                // name of currently loaded script
+    private $exts;                  // array of supported extensions
+
 
     /**
-    * Object constructor
-    *
-    * @param  string  Username (to managesieve login)
-    * @param  string  Password (to managesieve login)
-    * @param  string  Managesieve server hostname/address
-    * @param  string  Managesieve server port number
-    * @param  string  Enable/disable TLS use
-    * @param  array   Disabled extensions
-    */
+     * Object constructor
+     *
+     * @param string  Username (for managesieve login)
+     * @param string  Password (for managesieve login)
+     * @param string  Managesieve server hostname/address
+     * @param string  Managesieve server port number
+     * @param string  Managesieve authentication method 
+     * @param boolean Enable/disable TLS use
+     * @param array   Disabled extensions
+     * @param boolean Enable/disable debugging
+     * @param string  Proxy authentication identifier
+     * @param string  Proxy authentication password
+     */
     public function __construct($username, $password='', $host='localhost', $port=2000,
-			    $usetls=true, $disabled=array(), $debug=false)
+        $auth_type=null, $usetls=true, $disabled=array(), $debug=false,
+        $auth_cid=null, $auth_pw=null)
     {
-	$this->sieve = new Net_Sieve();
-      
-        if ($debug)
-    	    $this->sieve->setDebug(true, array($this, 'debug_handler'));
-      
-        if (PEAR::isError($this->sieve->connect($host, $port, NULL, $usetls)))
-    	    return $this->_set_error(SIEVE_ERROR_CONNECTION);
+        $this->sieve = new Net_Sieve();
 
-        if (PEAR::isError($this->sieve->login($username, $password)))
-    	    return $this->_set_error(SIEVE_ERROR_LOGIN);
+        if ($debug) {
+            $this->sieve->setDebug(true, array($this, 'debug_handler'));
+        }
 
-        $this->disabled = $disabled;
+        if (PEAR::isError($this->sieve->connect($host, $port, null, $usetls))) {
+            return $this->_set_error(SIEVE_ERROR_CONNECTION);
+        }
+
+        if (!empty($auth_cid)) {
+            $authz    = $username;
+            $username = $auth_cid;
+            $password = $auth_pw;
+        }
+
+        if (PEAR::isError($this->sieve->login($username, $password,
+            $auth_type ? strtoupper($auth_type) : null, $authz))
+        ) {
+            return $this->_set_error(SIEVE_ERROR_LOGIN);
+        }
+
+        $this->exts     = $this->get_extensions();
+
+        // disable features by config
+        if (!empty($disabled)) {
+            // we're working on lower-cased names
+            $disabled = array_map('strtolower', (array) $disabled);
+            foreach ($disabled as $ext) {
+                if (($idx = array_search($ext, $this->exts)) !== false) {
+                    unset($this->exts[$idx]);
+                }
+            }
+        }
     }
 
     public function __destruct() {
@@ -63,813 +106,282 @@
     }
 
     /**
-    * Getter for error code
-    */
+     * Getter for error code
+     */
     public function error()
     {
-	return $this->error ? $this->error : false;
+        return $this->error ? $this->error : false;
     }
-			    
+
     /**
-    * Saves current script into server
-    */
+     * Saves current script into server
+     */
     public function save($name = null)
     {
         if (!$this->sieve)
-    	    return $this->_set_error(SIEVE_ERROR_INTERNAL);
-	
-	if (!$this->script)
-	    return $this->_set_error(SIEVE_ERROR_INTERNAL);
-	
-	if (!$name)
-	    $name = $this->current;
+            return $this->_set_error(SIEVE_ERROR_INTERNAL);
+
+        if (!$this->script)
+            return $this->_set_error(SIEVE_ERROR_INTERNAL);
+
+        if (!$name)
+            $name = $this->current;
 
         $script = $this->script->as_text();
 
         if (!$script)
-	    $script = '/* empty script */';
+            $script = '/* empty script */';
 
         if (PEAR::isError($this->sieve->installScript($name, $script)))
-    	    return $this->_set_error(SIEVE_ERROR_INSTALL);
+            return $this->_set_error(SIEVE_ERROR_INSTALL);
 
         return true;
     }
 
     /**
-    * Saves text script into server
-    */
+     * Saves text script into server
+     */
     public function save_script($name, $content = null)
     {
         if (!$this->sieve)
-    	    return $this->_set_error(SIEVE_ERROR_INTERNAL);
-	
+            return $this->_set_error(SIEVE_ERROR_INTERNAL);
+
         if (!$content)
-	    $content = '/* empty script */';
+            $content = '/* empty script */';
 
         if (PEAR::isError($this->sieve->installScript($name, $content)))
-    	    return $this->_set_error(SIEVE_ERROR_INSTALL);
+            return $this->_set_error(SIEVE_ERROR_INSTALL);
 
         return true;
     }
 
     /**
-    * Activates specified script
-    */
+     * Activates specified script
+     */
     public function activate($name = null)
     {
-	if (!$this->sieve)
-    	    return $this->_set_error(SIEVE_ERROR_INTERNAL);
+        if (!$this->sieve)
+            return $this->_set_error(SIEVE_ERROR_INTERNAL);
 
-	if (!$name)
-	    $name = $this->current;
+        if (!$name)
+            $name = $this->current;
 
         if (PEAR::isError($this->sieve->setActive($name)))
-    	    return $this->_set_error(SIEVE_ERROR_ACTIVATE);
+            return $this->_set_error(SIEVE_ERROR_ACTIVATE);
 
         return true;
     }
 
     /**
-    * Removes specified script
-    */
-    public function remove($name = null)
-    {
-	if (!$this->sieve)
-    	    return $this->_set_error(SIEVE_ERROR_INTERNAL);
-
-	if (!$name)
-	    $name = $this->current;
-
-	// script must be deactivated first
-	if ($name == $this->sieve->getActive())
-            if (PEAR::isError($this->sieve->setActive('')))
-    		return $this->_set_error(SIEVE_ERROR_DELETE);
-
-        if (PEAR::isError($this->sieve->removeScript($name)))
-    	    return $this->_set_error(SIEVE_ERROR_DELETE);
-
-	if ($name == $this->current)
-	    $this->current = null;
-
-        return true;
-    }
-
-    /**
-    * Gets list of supported by server Sieve extensions
-    */
-    public function get_extensions()
+     * De-activates specified script
+     */
+    public function deactivate()
     {
         if (!$this->sieve)
-	    return $this->_set_error(SIEVE_ERROR_INTERNAL);
-	
-	$ext = $this->sieve->getExtensions();
-	// we're working on lower-cased names
-	$ext = array_map('strtolower', (array) $ext); 
+            return $this->_set_error(SIEVE_ERROR_INTERNAL);
 
-	if ($this->script) {
-	    $supported = $this->script->get_extensions();
-	    foreach ($ext as $idx => $ext_name)
-	        if (!in_array($ext_name, $supported))
-		    unset($ext[$idx]);
-	}
+        if (PEAR::isError($this->sieve->setActive('')))
+            return $this->_set_error(SIEVE_ERROR_DEACTIVATE);
 
-    	return array_values($ext);
+        return true;
     }
 
     /**
-    * Gets list of scripts from server
-    */
+     * Removes specified script
+     */
+    public function remove($name = null)
+    {
+        if (!$this->sieve)
+            return $this->_set_error(SIEVE_ERROR_INTERNAL);
+
+        if (!$name)
+            $name = $this->current;
+
+        // script must be deactivated first
+        if ($name == $this->sieve->getActive())
+            if (PEAR::isError($this->sieve->setActive('')))
+                return $this->_set_error(SIEVE_ERROR_DELETE);
+
+        if (PEAR::isError($this->sieve->removeScript($name)))
+            return $this->_set_error(SIEVE_ERROR_DELETE);
+
+        if ($name == $this->current)
+            $this->current = null;
+
+        return true;
+    }
+
+    /**
+     * Gets list of supported by server Sieve extensions
+     */
+    public function get_extensions()
+    {
+        if ($this->exts)
+            return $this->exts;
+
+        if (!$this->sieve)
+            return $this->_set_error(SIEVE_ERROR_INTERNAL);
+
+        $ext = $this->sieve->getExtensions();
+        // we're working on lower-cased names
+        $ext = array_map('strtolower', (array) $ext);
+
+        if ($this->script) {
+            $supported = $this->script->get_extensions();
+            foreach ($ext as $idx => $ext_name)
+                if (!in_array($ext_name, $supported))
+                    unset($ext[$idx]);
+        }
+
+        return array_values($ext);
+    }
+
+    /**
+     * Gets list of scripts from server
+     */
     public function get_scripts()
     {
         if (!$this->list) {
 
-    	    if (!$this->sieve)
-        	return $this->_set_error(SIEVE_ERROR_INTERNAL);
-    
-    	    $this->list = $this->sieve->listScripts();
+            if (!$this->sieve)
+                return $this->_set_error(SIEVE_ERROR_INTERNAL);
 
-    	    if (PEAR::isError($this->list))
-    		return $this->_set_error(SIEVE_ERROR_OTHER);
-	}
+            $list = $this->sieve->listScripts();
+
+            if (PEAR::isError($list))
+                return $this->_set_error(SIEVE_ERROR_OTHER);
+
+            $this->list = $list;
+        }
 
         return $this->list;
     }
 
     /**
-    * Returns active script name
-    */
+     * Returns active script name
+     */
     public function get_active()
     {
-	if (!$this->sieve)
-    	    return $this->_set_error(SIEVE_ERROR_INTERNAL);
+        if (!$this->sieve)
+            return $this->_set_error(SIEVE_ERROR_INTERNAL);
 
-	return $this->sieve->getActive();
+        return $this->sieve->getActive();
     }
-    
+
     /**
-    * Loads script by name
-    */
+     * Loads script by name
+     */
     public function load($name)
     {
         if (!$this->sieve)
-    	    return $this->_set_error(SIEVE_ERROR_INTERNAL);
+            return $this->_set_error(SIEVE_ERROR_INTERNAL);
 
         if ($this->current == $name)
-    	    return true;
-    
-    	$script = $this->sieve->getScript($name);
-    
+            return true;
+
+        $script = $this->sieve->getScript($name);
+
         if (PEAR::isError($script))
-    	    return $this->_set_error(SIEVE_ERROR_OTHER);
+            return $this->_set_error(SIEVE_ERROR_OTHER);
 
-	// try to parse from Roundcube format
-        $this->script = new rcube_sieve_script($script, $this->disabled);
+        // try to parse from Roundcube format
+        $this->script = $this->_parse($script);
 
-        // ... else try to import from different formats
-        if (empty($this->script->content)) {
-    	    $script = $this->_import_rules($script);
-    	    $this->script = new rcube_sieve_script($script, $this->disabled);
-    	}
+        $this->current = $name;
 
-        // replace all elsif with if+stop, we support only ifs
-        foreach ($this->script->content as $idx => $rule) {
-            if (!isset($this->script->content[$idx+1])
-                || preg_match('/^else|elsif$/', $this->script->content[$idx+1]['type'])) {
-                // 'stop' not found?
-                if (!preg_match('/^(stop|vacation)$/', $rule['actions'][count($rule['actions'])-1]['type'])) {
-                    $this->script->content[$idx]['actions'][] = array(
-                        'type' => 'stop'
-                    );
-                }
-            }
-        }
-
-    	$this->current = $name;
-
-    	return true;
+        return true;
     }
 
     /**
-    * Creates empty script or copy of other script
-    */
-    public function copy($name, $copy)
+     * Loads script from text content
+     */
+    public function load_script($script)
     {
         if (!$this->sieve)
-    	    return $this->_set_error(SIEVE_ERROR_INTERNAL);
+            return $this->_set_error(SIEVE_ERROR_INTERNAL);
 
-	if ($copy) {
-    	    $content = $this->sieve->getScript($copy);
-    
-    	    if (PEAR::isError($content))
-    		return $this->_set_error(SIEVE_ERROR_OTHER);
-	}
-	
-	return $this->save_script($name, $content);
+        // try to parse from Roundcube format
+        $this->script = $this->_parse($script);
     }
 
-
-    private function _import_rules($script)
+    /**
+     * Creates rcube_sieve_script object from text script
+     */
+    private function _parse($txt)
     {
-        $i = 0;
-        $name = array();
+        // parse
+        $script = new rcube_sieve_script($txt, $this->exts);
 
-        // Squirrelmail (Avelsieve)
-        if ($tokens = preg_split('/(#START_SIEVE_RULE.*END_SIEVE_RULE)\n/', $script, -1, PREG_SPLIT_DELIM_CAPTURE)) {
-    	    foreach($tokens as $token) {
-        	if (preg_match('/^#START_SIEVE_RULE.*/', $token, $matches)) {
-	    	    $name[$i] = "unnamed rule ".($i+1);
-                    $content .= "# rule:[".$name[$i]."]\n";
+        // fix/convert to Roundcube format
+        if (!empty($script->content)) {
+            // replace all elsif with if+stop, we support only ifs
+            foreach ($script->content as $idx => $rule) {
+                if (empty($rule['type']) || !preg_match('/^(if|elsif|else)$/', $rule['type'])) {
+                    continue;
                 }
-        	elseif (isset($name[$i])) {
-	    	    $content .= "if $token\n";
-		    $i++;
+
+                $script->content[$idx]['type'] = 'if';
+
+                // 'stop' not found?
+                foreach ($rule['actions'] as $action) {
+                    if (preg_match('/^(stop|vacation)$/', $action['type'])) {
+                        continue 2;
+                    }
+                }
+                if (empty($script->content[$idx+1]) || $script->content[$idx+1]['type'] != 'if') {
+                    $script->content[$idx]['actions'][] = array('type' => 'stop');
                 }
             }
         }
-        // Horde (INGO)
-        else if ($tokens = preg_split('/(# .+)\r?\n/i', $script, -1, PREG_SPLIT_DELIM_CAPTURE)) {
-            foreach($tokens as $token) {
-                if (preg_match('/^# (.+)/i', $token, $matches)) {
-                    $name[$i] = $matches[1];
-                    $content .= "# rule:[" . $name[$i] . "]\n";
-                }
-                elseif (isset($name[$i])) {
-                    $token = str_replace(":comparator \"i;ascii-casemap\" ", "", $token);
-                    $content .= $token . "\n";
-                    $i++;
-                }
-            }
-        }
-
-        return $content;
-    }
-
-    private function _set_error($error)
-    {
-	$this->error = $error;
-        return false;
-    }
-
-    /**
-    * This is our own debug handler for connection
-    * @access public
-    */
-    public function debug_handler(&$sieve, $message)
-    {
-        write_log('sieve', preg_replace('/\r\n$/', '', $message));
-    }		        
-}
-
-class rcube_sieve_script
-{
-    public $content = array();	// script rules array   
-
-    private $supported = array(	// extensions supported by class
-        'fileinto',
-        'reject',
-        'ereject',
-        'vacation', 	// RFC5230
-    // TODO: (most wanted first) body, imapflags, notify, regex
-    );
-  
-    /**
-    * Object constructor
-    *
-    * @param  string  Script's text content
-    * @param  array   Disabled extensions
-    */
-    public function __construct($script, $disabled=NULL)
-    {
-        if (!empty($disabled))
-            foreach ($disabled as $ext)
-                if (($idx = array_search($ext, $this->supported)) !== false)
-	            unset($this->supported[$idx]);
-
-        $this->content = $this->_parse_text($script);
-    }
-
-    /**
-    * Adds script contents as text to the script array (at the end)
-    *
-    * @param	string	Text script contents
-    */
-    public function add_text($script)
-    {
-        $content = $this->_parse_text($script);
-        $result = false;
-
-        // check existsing script rules names
-        foreach ($this->content as $idx => $elem) {
-            $names[$elem['name']] = $idx;
-        }
-
-        foreach ($content as $elem) {
-            if (!isset($names[$elem['name']])) {
-                array_push($this->content, $elem);
-	        $result = true;
-	    }
-        }
-
-        return $result;
-    }
-
-    /**
-    * Adds rule to the script (at the end)
-    *
-    * @param	string	Rule name
-    * @param	array	Rule content (as array)
-    */
-    public function add_rule($content)
-    {
-        // TODO: check this->supported
-        array_push($this->content, $content);
-        return sizeof($this->content)-1;
-    }
-
-    public function delete_rule($index)
-    {
-        if(isset($this->content[$index])) {
-            unset($this->content[$index]);
-	    return true;
-	}
-        return false;
-    }
-
-    public function size()
-    {
-        return sizeof($this->content);
-    }
-
-    public function update_rule($index, $content)
-    {
-        // TODO: check this->supported
-        if ($this->content[$index]) {
-	    $this->content[$index] = $content;
-	    return $index;
-	}
-        return false;
-    }
-
-    /**
-    * Returns script as text
-    */
-    public function as_text()
-    {
-        $script = '';
-        $exts = array();
-        $idx = 0;
-
-        // rules
-        foreach ($this->content as $rule) {
-	    $extension = '';
-	    $tests = array();
-	    $i = 0;
-
-	    // header
-	    $script .= '# rule:[' . $rule['name'] . "]\n";
-  
-	    // constraints expressions
-	    foreach ($rule['tests'] as $test) {
-	        $tests[$i] = '';
-	        switch ($test['test']) {
-		    case 'size':
-		        $tests[$i] .= ($test['not'] ? 'not ' : '');
-		        $tests[$i] .= 'size :' . ($test['type']=='under' ? 'under ' : 'over ') . $test['arg'];
-		    break;
-		    case 'true':
-		        $tests[$i] .= ($test['not'] ? 'not true' : 'true');
-		    break;
-		    case 'exists':
-		        $tests[$i] .= ($test['not'] ? 'not ' : '');
-		        if (is_array($test['arg']))
-			    $tests[$i] .= 'exists ["' . implode('", "', $this->_escape_string($test['arg'])) . '"]';
-		        else
-			    $tests[$i] .= 'exists "' . $this->_escape_string($test['arg']) . '"';
-		    break;    
-		    case 'header':
-		        $tests[$i] .= ($test['not'] ? 'not ' : '');
-		        $tests[$i] .= 'header :' . $test['type'];
-		        if (is_array($test['arg1']))
-			    $tests[$i] .= ' ["' . implode('", "', $this->_escape_string($test['arg1'])) . '"]';
-		        else
-			    $tests[$i] .= ' "' . $this->_escape_string($test['arg1']) . '"';
-		        if (is_array($test['arg2']))
-			    $tests[$i] .= ' ["' . implode('", "', $this->_escape_string($test['arg2'])) . '"]';
-		        else
-			    $tests[$i] .= ' "' . $this->_escape_string($test['arg2']) . '"';
-		    break;
-		}
-	        $i++;
-	    }
-
-//            $script .= ($idx>0 ? 'els' : '').($rule['join'] ? 'if allof (' : 'if anyof (');
-            // disabled rule: if false #....
-            $script .= 'if' . ($rule['disabled'] ? ' false #' : '');
-	    $script .= $rule['join'] ? ' allof (' : ' anyof (';
-	    if (sizeof($tests) > 1)
-	        $script .= implode(",\n\t", $tests);
-	    else if (sizeof($tests))
-	        $script .= $tests[0];
-	    else
-	        $script .= 'true';
-	    $script .= ")\n{\n";
-  
-	    // action(s)
-	    foreach ($rule['actions'] as $action) {
-	        switch ($action['type']) {
-	            case 'fileinto':
-	                $extension = 'fileinto';
-		        $script .= "\tfileinto \"" . $this->_escape_string($action['target']) . "\";\n";
-	            break;
-	            case 'redirect':
-		        $script .= "\tredirect \"" . $this->_escape_string($action['target']) . "\";\n";
-	            break;
-	            case 'reject':
-	            case 'ereject':
-	                $extension = $action['type'];
-		        if (strpos($action['target'], "\n")!==false)
-		            $script .= "\t".$action['type']." text:\n" . $action['target'] . "\n.\n;\n";
-		        else
-		            $script .= "\t".$action['type']." \"" . $this->_escape_string($action['target']) . "\";\n";
-	            break;
-	            case 'keep':
-	            case 'discard':
-	            case 'stop':
-	                $script .= "\t" . $action['type'] .";\n";
-	            break;
-	            case 'vacation':
-                        $extension = 'vacation';
-                        $script .= "\tvacation";
-		        if ($action['days'])
-		            $script .= " :days " . $action['days'];
-		        if ($action['addresses'])
-		            $script .= " :addresses " . $this->_print_list($action['addresses']);
-		        if ($action['subject'])
-		            $script .= " :subject \"" . $this->_escape_string($action['subject']) . "\"";
-		        if ($action['handle'])
-		            $script .= " :handle \"" . $this->_escape_string($action['handle']) . "\"";
-		        if ($action['from'])
-		            $script .= " :from \"" . $this->_escape_string($action['from']) . "\"";
-		        if ($action['mime'])
-		            $script .= " :mime";
-		        if (strpos($action['reason'], "\n")!==false)
-		            $script .= " text:\n" . $action['reason'] . "\n.\n;\n";
-		        else
-		            $script .= " \"" . $this->_escape_string($action['reason']) . "\";\n";
-	            break;
-	        }
-
-	        if ($extension && !isset($exts[$extension]))
-	            $exts[$extension] = $extension;
-	    }
-
-	    $script .= "}\n";
-	    $idx++;
-	}
-      
-        // requires
-        if (sizeof($exts))
-            $script = 'require ["' . implode('","', $exts) . "\"];\n" . $script;
 
         return $script;
     }
 
     /**
-    * Returns script object
-    *
-    */
-    public function as_array()
+     * Gets specified script as text
+     */
+    public function get_script($name)
     {
-        return $this->content;
-    }
+        if (!$this->sieve)
+            return $this->_set_error(SIEVE_ERROR_INTERNAL);
 
-    /**
-    * Returns array of supported extensions
-    *
-    */
-    public function get_extensions()
-    {
-        return array_values($this->supported);
-    }
+        $content = $this->sieve->getScript($name);
 
-    /**
-    * Converts text script to rules array
-    *
-    * @param	string	Text script
-    */
-    private function _parse_text($script)
-    {
-        $i = 0;
-        $content = array();
-
-        // remove C comments
-        $script = preg_replace('|/\*.*?\*/|sm', '', $script);
-
-        // tokenize rules
-        if ($tokens = preg_split('/(# rule:\[.*\])\r?\n/', $script, -1, PREG_SPLIT_DELIM_CAPTURE)) {
-            foreach($tokens as $token) {
-	        if (preg_match('/^# rule:\[(.*)\]/', $token, $matches)) {
-	            $content[$i]['name'] = $matches[1];
-	        }
-	        elseif (isset($content[$i]['name']) && sizeof($content[$i]) == 1) {
-	            if ($rule = $this->_tokenize_rule($token)) {
-	    	        $content[$i] = array_merge($content[$i], $rule);
-	    	        $i++;
-		    }
-		    else // unknown rule format
-		        unset($content[$i]);
-	        }
-	    }
-        }
+        if (PEAR::isError($content))
+            return $this->_set_error(SIEVE_ERROR_OTHER);
 
         return $content;
     }
 
     /**
-    * Convert text script fragment to rule object
-    *
-    * @param	string	Text rule
-    */
-    private function _tokenize_rule($content)
+     * Creates empty script or copy of other script
+     */
+    public function copy($name, $copy)
     {
-        $result = NULL;
-    
-        if (preg_match('/^(if|elsif|else)\s+((true|false|not\s+true|allof|anyof|exists|header|not|size)(.*))\s+\{(.*)\}$/sm',
-            trim($content), $matches)) {
+        if (!$this->sieve)
+            return $this->_set_error(SIEVE_ERROR_INTERNAL);
 
-            $tests = trim($matches[2]);
+        if ($copy) {
+            $content = $this->sieve->getScript($copy);
 
-            // disabled rule (false + comment): if false #.....
-            if ($matches[3] == 'false') {
-                $tests = preg_replace('/^false\s+#\s+/', '', $tests);
-                $disabled = true;
-            }
-            else
-                $disabled = false;
-
-	    list($tests, $join) = $this->_parse_tests($tests);
-	    $actions = $this->_parse_actions(trim($matches[5]));
-
-	    if ($tests && $actions)
-	        $result = array(
-                    'type' => $matches[1],
-		    'tests' => $tests,
-		    'actions' => $actions,
-		    'join' => $join,
-                    'disabled' => $disabled,
-	        );
-	}
-
-        return $result;
-    }    
-
-    /**
-    * Parse body of actions section
-    *
-    * @param	string	Text body
-    * @return	array	Array of parsed action type/target pairs
-    */
-    private function _parse_actions($content)
-    {
-        $result = NULL;
-
-        // supported actions
-        $patterns[] = '^\s*discard;';
-        $patterns[] = '^\s*keep;';
-        $patterns[] = '^\s*stop;';
-        $patterns[] = '^\s*redirect\s+(.*?[^\\\]);';
-        if (in_array('fileinto', $this->supported))
-            $patterns[] = '^\s*fileinto\s+(.*?[^\\\]);';
-        if (in_array('reject', $this->supported)) {
-            $patterns[] = '^\s*reject\s+text:(.*)\n\.\n;';
-            $patterns[] = '^\s*reject\s+(.*?[^\\\]);';
-            $patterns[] = '^\s*ereject\s+text:(.*)\n\.\n;';
-            $patterns[] = '^\s*ereject\s+(.*?[^\\\]);';
-        }
-        if (in_array('vacation', $this->supported))
-            $patterns[] = '^\s*vacation\s+(.*?[^\\\]);';
-
-        $pattern = '/(' . implode('$)|(', $patterns) . '$)/ms';
-
-        // parse actions body
-        if (preg_match_all($pattern, $content, $mm, PREG_SET_ORDER)) {
-    	    foreach ($mm as $m) {
-	        $content = trim($m[0]);
-	  
-    	        if(preg_match('/^(discard|keep|stop)/', $content, $matches)) {
-	            $result[] = array('type' => $matches[1]);
-	        }
-                elseif(preg_match('/^fileinto/', $content)) {
-	            $result[] = array('type' => 'fileinto', 'target' => $this->_parse_string($m[sizeof($m)-1])); 
-	        }
-                elseif(preg_match('/^redirect/', $content)) {
-	            $result[] = array('type' => 'redirect', 'target' => $this->_parse_string($m[sizeof($m)-1])); 
-	        }
-    	        elseif(preg_match('/^(reject|ereject)\s+(.*);$/sm', $content, $matches)) {
-	            $result[] = array('type' => $matches[1], 'target' => $this->_parse_string($matches[2])); 
-	        }
-                elseif(preg_match('/^vacation\s+(.*);$/sm', $content, $matches)) {
-	            $vacation = array('type' => 'vacation');
-
-    	            if (preg_match('/:(days)\s+([0-9]+)/', $content, $vm)) {
-	                $vacation['days'] = $vm[2];
-		        $content = preg_replace('/:(days)\s+([0-9]+)/', '', $content); 
-	            }
-    	            if (preg_match('/:(subject)\s+(".*?[^\\\]")/', $content, $vm)) {
-	                $vacation['subject'] = $vm[2];
-    		        $content = preg_replace('/:(subject)\s+(".*?[^\\\]")/', '', $content); 
-    	            }
-    	            if (preg_match('/:(addresses)\s+\[(.*?[^\\\])\]/', $content, $vm)) {
-	                $vacation['addresses'] = $this->_parse_list($vm[2]);
-		        $content = preg_replace('/:(addresses)\s+\[(.*?[^\\\])\]/', '', $content); 
-	            }
-    	            if (preg_match('/:(handle)\s+(".*?[^\\\]")/', $content, $vm)) {
-	                $vacation['handle'] = $vm[2];
-		        $content = preg_replace('/:(handle)\s+(".*?[^\\\]")/', '', $content); 
-	            }
-    	            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[] = $vacation;
-                }
-            }
+            if (PEAR::isError($content))
+                return $this->_set_error(SIEVE_ERROR_OTHER);
         }
 
-        return $result;
-    }    
-    
-    /**
-    * Parse test/conditions section
-    *
-    * @param	string	Text 
-    */
-    private function _parse_tests($content)
+        return $this->save_script($name, $content);
+    }
+
+    private function _set_error($error)
     {
-        $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);
+        $this->error = $error;
+        return false;
     }
 
     /**
-    * Parse string or list of strings to string or array of strings
-    *
-    * @param	string	Text 
-    */
-    private function _parse_list($content)
+     * This is our own debug handler for connection
+     */
+    public function debug_handler(&$sieve, $message)
     {
-        $result = array();
-      
-        for ($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('","', $list) . '"]';
+        write_log('sieve', preg_replace('/\r\n$/', '', $message));
     }
 }
-
-?>

--
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