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AlternC/squirrelmail/procmail_to_sieve.php

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<?php
/*
AlternC - Web Hosting System
Copyright (C) 2002 by the AlternC Development Team.
http://alternc.org/
----------------------------------------------------------------------
LICENSE
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License (GPL)
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
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.
To read the license please visit http://www.gnu.org/copyleft/gpl.html
----------------------------------------------------------------------
Purpose of file: Based on procmail-builder module, converts
the procmail generated by AlternC<=1.0.3 to AlternC>=3.0
----------------------------------------------------------------------
*/
/* ----------------------------------------------------------------- */
/**
MAIN FUNCTION
Read all the mail folders and search for .procmailrc's
*/
function procmail2sieve() {
global $ROOT;
$d=@opendir($ROOT);
if ($d) {
while ($c=readdir($d)) {
if (substr($c,0,1)==".") continue; // skip hidden files
if (is_dir($ROOT."/".$c)) {
// Go to level 2.
$e=@opendir($ROOT."/".$c);
if ($e) {
while ($f=readdir($e)) {
if (substr($f,0,1)==".") continue; // skip hidden files
if (is_file($ROOT."/".$c."/".$f."/.procmailrc")) {
// We found one .procmailrc, let's parse it on behalf of his user...
parseOneProcmail($f); /* ################## SUB FUNCTION ###################### */
}
}
closedir($e);
} else {
echo "ERROR: Cannot open ".$ROOT."/".$c."\n";
}
}
}
closedir($d);
} else {
echo "FATAL: cannot open ".$ROOT."\n";
exit();
}
} /* procmail2sieve */
/* ----------------------------------------------------------------- */
/** Parse ONE procmailrc, and write its sieve rules
*/
function parseOneProcmail($user) {
global $SIEVEROOT;
$email=preg_replace("#_([^_]*)$#","@$1",$user);
if ($rules=readrules($user)) { /* ################## SUB FUNCTION ###################### */
for($i=0; $i<count($rules); $i++) {
list($rules[$i]["conds"],$rules[$i]["actionparam"])=describe($rules[$i]); /* ################## SUB FUNCTION ###################### */
}
// Now we have $rule["type"] = the ACTION to accomplish + (if 1 or 4) $actionparam
// and a list of $rule["conds"][0]=condition type & $rule["conds"][1]=condition parameter (if not 5)
// Let's write a sieve script :)
$u=substr($u,0,1);
@mkdir($SIEVEROOT."/".$u."/".$user."/sieve");
@mkdir($SIEVEROOT."/".$u."/".$user."/sieve/tmp");
$uid=fileowner($SIEVEROOT."/".$u."/".$user);
chown($SIEVEROOT."/".$u."/".$user."/sieve",$uid);
chgrp($SIEVEROOT."/".$u."/".$user."/sieve","vmail");
chown($SIEVEROOT."/".$u."/".$user."/sieve/tmp",$uid);
chgrp($SIEVEROOT."/".$u."/".$user."/sieve/tmp","vmail");
$f=fopen($SIEVEROOT."/".$u."/".$user."/sieve/tmp/phpscript.sieve","wb");
if (!$f) {
echo "ERROR: Can't open '$user' in '$SIEVEROOT' for writing\n";
} else {
echo "OK: writing sieve script for $user (".count($rules)." rules)\n";
$avelsieveversion=array("major" => 1, "minor"=>9, "release" => 9, "string" => "1.9.9");
fputs($f,'# This script has been automatically generated by avelsieve
# (Sieve Mail Filters Plugin for Squirrelmail)
# Warning: If you edit this manually, then the changes will not
# be reflected in the users\' front-end!
#AVELSIEVE_VERSION'.urlencode(base64_encode(serialize($avelsieveversion))).'
#AVELSIEVE_CREATED'.time().'
#AVELSIEVE_MODIFIED'.time().'
require ["fileinto","envelope","reject","vacation","imap4flags","relational","comparator-i;ascii-numeric","regex","body","date"];
');
foreach($rules as $rule) {
if ($rule["type"]==2) continue; // IGNORE "Filter the message through SpamAssassin"
// Create the avelsieve array:
$avelrule=array();
// And sieve script:
$script="if ";
$avelrule["condition"]="and";
$avelrule["type"]=1;
if (!count($rule["conds"])) {
// no conditions
$script.="true\n";
$avelrule["cond"][]=array("kind" => "message", "type" => "all");
} else { // have conditions
$script.="allof (";
$first=true;
foreach($conds as $cond) {
if (!$first) $script.=",\n";
$first=false;
// What kind of condition?
switch($cond[0]) {
case 0: // subject
$script.='header :contains "Subject" "'.str_replace('"','\\"',$cond[1]).'"';
$avelrule["cond"][]=array("kind" => "message", "type" => "header", "header" => "Subject", "matchtype" => "contains", "headermatch" => $cond[1] );
break;
case 1: // sender
$script.='header :contains "From" "'.str_replace('"','\\"',$cond[1]).'"';
$avelrule["cond"][]=array("kind" => "message", "type" => "header", "header" => "From", "matchtype" => "contains", "headermatch" => $cond[1] );
break;
case 2: // recipient
$script.='address :contains ["to", "cc"] "'.str_replace('"','\\"',$cond[1]).'"';
$avelrule["cond"][]=array("kind" => "message", "type" => "address", "address" => "toorcc", "matchtype" => "contains", "addressmatch" => $cond[1] );
break;
case 3: // List-Post
$script.='header :contains "List-Post" "'.str_replace('"','\\"',$cond[1]).'"';
$avelrule["cond"][]=array("kind" => "message", "type" => "header", "header" => "List-Post", "matchtype" => "contains", "headermatch" => $cond[1] );
break;
case 4: // List-Id
$script.='header :contains "List-Id" "'.str_replace('"','\\"',$cond[1]).'"';
$avelrule["cond"][]=array("kind" => "message", "type" => "header", "header" => "List-Id", "matchtype" => "contains", "headermatch" => $cond[1] );
break;
case 5: // Spamassassin
$script.='header :contains "X-Spam-Status" "Yes"';
$avelrule["cond"][]=array("kind" => "message", "type" => "header", "header" => "X-Spam-Status", "matchtype" => "contains", "headermatch" => "Yes" );
break;
case 6: // Delivered-To
$script.='envelope :contains "to" "'.str_replace('"','\\"',$cond[1]).'"';
$avelrule["cond"][]=array("kind" => "message", "type" => "envelope", "envelope" => "to", "matchtype" => "contains", "envelopematch" => $cond[1] );
break;
}
}
$script.=")\n{\n";
}
// Now the ACTION:
switch($rule["type"]) {
case 1: // move to
$script.='fileinto "'.str_replace('"','\\"',$rule["actionparam"]).'";
stop;
';
$avelrule["action"] = 5;
$avelrule["folder"] = $rule["actionparam"];
$avelrule["stop"] = "on";
break;
case 3: // Discard (for good)
$script.='discard;
stop;
';
$avelrule["action"] = 2;
$avelrule["stop"] = "on";
break;
case 4: // Forward To (copy)
$script.='redirect "'.str_replace('"','\\"',$rule["actionparam"]).'";
';
$avelrule["action"] = 4;
$avelrule["redirectemail"] = $rule["actionparam"];
break;
case 5: // Auto-Reply
$script.='vacation :days 7 :addresses ["'.$email.'"@ :subject "Auto Reply" text:
'.str_replace("\\'","'",@file_get_contents($ROOT."/".$u."/".$user."/".$user.".txt")).'
.
;
';
$avelrule["action"] = 6;
$avelrule["vac_addresses"] = $email;
$avelrule["vac_subject"] = "Auto Reply";
$avelrule["vac_days"] = 7;
$avelrule["vac_message"] = @file_get_contents($ROOT."/".$u."/".$user."/".$user.".txt");
break;
}
$script.="}\n";
// Now put it into the script file :
fputs($f,"#START_SIEVE_RULE".urlencode(base64_encode(serialize($avelrule)))."END_SIEVE_RULE\n");
fputs($f,$script);
/*
if allof (header :contains "From" "expediteur@coin.pan",
header :contains "To" "destinataire@coin.pan")
{
fileinto "INBOX.test";
stop;
}
*/
} /* for each rule */
fclose($f);
// Then Move it to the right place
@unlink($SIEVEROOT."/".$u."/".$user."/sieve/phpscript.sieve");
rename(
$SIEVEROOT."/".$u."/".$user."/sieve/tmp/phpscript.sieve",
$SIEVEROOT."/".$u."/".$user."/sieve/phpscript.sieve"
);
chown($SIEVEROOT."/".$u."/".$user."/sieve/phpscript.sieve",$uid);
chgrp($SIEVEROOT."/".$u."/".$user."/sieve/phpscript.sieve","vmail");
}
} else {
echo "ERROR: can't read rules for $user\n";
}
} /* parseOneProcmauil */
/* ----------------------------------------------------------------- */
/** Read rules, fill an array
from m_procmail.php original file
yeah I know, ereg() is deprecated ;)
*/
function readrules($user="") {
if (!$user) $user=$this->user;
$u=substr($user,0,1);
if (!file_exists("/var/alternc/mail/$u/$user/.procmailrc")) {
return false;
}
$f=fopen("/var/alternc/mail/$u/$user/.procmailrc","rb");
$state=0; $rulenum=0; $ligne=0;
$res=array();
while (!feof($f)) {
$found=false; // found allow us to know if we found something for each loop
$s=fgets($f,1024);
$s=trim($s);
if ($state==1 && !ereg("^# RuleEnd$",$s)) {
$res[$rulenum]["rule"][$res[$rulenum]["count"]++]=$s;
$found=true;
}
if ($state==1 && ereg("^# RuleEnd$",$s)) {
$state=0;
$rulenum++;
$found=true;
}
if ($state==0 && ereg("^# RuleType ([0-9][0-9]) -- (.*)?$",$s,$r)) {
$state=1;
$res[$rulenum]["type"]=$r[1];
$res[$rulenum]["name"]=$r[2];
$res[$rulenum]["count"]=0;
$found=true;
}
if (!$found && $state!=0) {
return false;
}
$ligne++;
}
fclose($f);
return $res;
}
/* ----------------------------------------------------------------- */
/** Take ONE rule array, extract properly
returns one array with the conditions (which are arrays with Condition Type and Value)
and the action parameter
*/
function describe($rule) {
// Lecture des conditions :
$cond=array();
switch ($rule["type"]) {
case 5:
$i=1;
while ($rule["rule"][$i]!="* !^FROM_DAEMON" && $rule["rule"][$i]!="") {
$cond[]=$rule["rule"][$i];
$i++;
}
break;
default:
$i=1;
while (substr($rule["rule"][$i],0,1)=="*") {
$cond[]=$rule["rule"][$i];
$i++;
}
break;
}
// $cond is an array of conditions
// let's parse the condition : (see arrays at the top of this file)
$conds=array();
for($i=0;$i<count($cond);$i++) {
if (ereg("^\\* \\^Subject\\.\\*(.*)$",$cond[$i],$t)) {
$conds[]=array( 0, $t[1] );
}
if (ereg("^\\* \\^From\\.\\*(.*)$",$cond[$i],$t)) {
$conds[]=array( 1, $t[1] );
}
if (ereg("^\\* \\^TO_(.*)$",$cond[$i],$t)) {
$conds[]=array( 2, $t[1] );
}
if (ereg("^\\* \\^List-Post: (.*)$",$cond[$i],$t)) {
$conds[]=array( 3, $t[1] );
}
if (ereg("^\\* \\^List-Id: (.*)$",$cond[$i],$t)) {
$conds[]=array( 4, $t[1] );
}
if (ereg("^\\* \\^X-Spam-Status: Yes$",$cond[$i])) {
$conds[]=array( 5 );
}
if (ereg("^\\* \\^Delivered-To:\\.\\*(.*)$",$cond[$i],$t)) {
$conds[]=array( 6, $t[1] );
}
}
// Action :
$actionparam=false;
switch ($rule["type"]) {
case 1:
$actionparam=$rule["rule"][count($rule["rule"])-2]; /* Folder */
break;
case 4:
$actionparam = substr($rule["rule"][count($rule["rule"])-2],0,15); /* Recipient */
break;
}
return array($conds,$actionparam);
}
/* Help for humans ... */
$acriteria=array(
0 => "Le sujet du message contient ...",
1 => "L'exp<78>diteur du message est contient ...",
2 => "L'un des destinataires du message contient ...",
3 => "L'en-tete 'List-Post' du message est ...",
4 => "L'en-tete 'List-Id' du message est ...",
5 => "SpamAssassin consid<69>re qu'il s'agit d'un Spam",
6 => "L'en-tete 'Delivered-To' du message contient ...",
);
$aactions=array(
1 => "Move the message to this folder",
2 => "Filter the message through SpamAssassin",
3 => "Discard the message (for good !)",
4 => "Forward the mail to",
5 => "Auto-reply",
);
/* ----------------------------------------------------------------- */
// CONFIGURATION :
$ROOT="/var/alternc/mail";
$SIEVEROOT="/var/lib/dovecot/sieve";
// GO !
procmail2sieve();
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