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<?php
/**
* mail_fetch/functions.php
*
* Functions for the mail_fetch plugin.
*
* Original code from LexZEUS <lexzeus@mifinca.com>
* and josh@superfork.com (extracted from php manual)
* Adapted for MailFetch by Philippe Mingo <mingo@rotedic.com>
*
* @copyright © 1999-2006 The SquirrelMail Project Team
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
* @version $Id: functions.php,v 1.17 2006/02/01 09:25:11 jervfors Exp $
* @package plugins
* @subpackage mail_fetch
*/
/** @ignore */
if (! defined('SM_PATH')) define('SM_PATH','../../');
/** pop3 class */
include_once (SM_PATH . 'plugins/mail_fetch/class.POP3.php');
/** declare plugin globals */
global $mail_fetch_allow_unsubscribed;
/**
* Controls use of unsubscribed folders in plugin
* @global boolean $mail_fetch_allow_unsubscribed
* @since 1.5.1 and 1.4.5
*/
$mail_fetch_allow_unsubscribed = false;
/** load site config */
if (file_exists(SM_PATH . 'config/mail_fetch_config.php')) {
include_once(SM_PATH . 'config/mail_fetch_config.php');
} elseif (file_exists(SM_PATH . 'plugins/mail_fetch/config.php')) {
include_once(SM_PATH . 'plugins/mail_fetch/config.php');
}
// hooked functions
/**
* internal function used to load user's preferences
* @since 1.5.1
* @private
*/
function mail_fetch_load_pref_function() {
global $data_dir;
global $mailfetch_server_number;
global $mailfetch_cypher, $mailfetch_port_;
global $mailfetch_server_,$mailfetch_alias_,$mailfetch_user_,$mailfetch_pass_;
global $mailfetch_lmos_, $mailfetch_uidl_, $mailfetch_login_, $mailfetch_fref_;
global $PHP_SELF;
sqgetGlobalVar('username', $username, SQ_SESSION);
if( stristr( $PHP_SELF, 'mail_fetch' ) ) {
$mailfetch_server_number = getPref($data_dir, $username, 'mailfetch_server_number', 0);
$mailfetch_cypher = getPref($data_dir, $username, 'mailfetch_cypher', 'on' );
if ($mailfetch_server_number<1) $mailfetch_server_number=0;
for ($i=0;$i<$mailfetch_server_number;$i++) {
$mailfetch_server_[$i] = getPref($data_dir, $username, "mailfetch_server_$i");
$mailfetch_port_[$i] = getPref($data_dir, $username, "mailfetch_port_$i");
$mailfetch_alias_[$i] = getPref($data_dir, $username, "mailfetch_alias_$i");
$mailfetch_user_[$i] = getPref($data_dir, $username, "mailfetch_user_$i");
$mailfetch_pass_[$i] = getPref($data_dir, $username, "mailfetch_pass_$i");
$mailfetch_lmos_[$i] = getPref($data_dir, $username, "mailfetch_lmos_$i");
$mailfetch_login_[$i] = getPref($data_dir, $username, "mailfetch_login_$i");
$mailfetch_fref_[$i] = getPref($data_dir, $username, "mailfetch_fref_$i");
$mailfetch_uidl_[$i] = getPref($data_dir, $username, "mailfetch_uidl_$i");
if( $mailfetch_cypher == 'on' ) $mailfetch_pass_[$i] = decrypt( $mailfetch_pass_[$i] );
}
}
}
/**
* Internal function used to fetch pop3 mails on login
* @since 1.5.1
* @private
*/
function mail_fetch_login_function() {
include_once (SM_PATH . 'include/validate.php');
include_once (SM_PATH . 'functions/imap.php');
global $data_dir, $imapServerAddress, $imapPort;
sqgetGlobalVar('username', $username, SQ_SESSION);
sqgetGlobalVar('key', $key, SQ_COOKIE);
$mailfetch_newlog = getPref($data_dir, $username, 'mailfetch_newlog');
$outMsg = '';
$mailfetch_server_number = getPref($data_dir, $username, 'mailfetch_server_number');
if (!isset($mailfetch_server_number)) $mailfetch_server_number=0;
$mailfetch_cypher = getPref($data_dir, $username, 'mailfetch_cypher');
if ($mailfetch_server_number<1) $mailfetch_server_number=0;
for ($i_loop=0;$i_loop<$mailfetch_server_number;$i_loop++) {
$mailfetch_login_[$i_loop] = getPref($data_dir, $username, "mailfetch_login_$i_loop");
$mailfetch_fref_[$i_loop] = getPref($data_dir, $username, "mailfetch_fref_$i_loop");
$mailfetch_pass_[$i_loop] = getPref($data_dir, $username, "mailfetch_pass_$i_loop");
if( $mailfetch_cypher == 'on' )
$mailfetch_pass_[$i_loop] = decrypt( $mailfetch_pass_[$i_loop] );
if( $mailfetch_pass_[$i_loop] <> '' && // Empty passwords no allowed
( ( $mailfetch_login_[$i_loop] == 'on' && $mailfetch_newlog == 'on' ) || $mailfetch_fref_[$i_loop] == 'on' ) ) {
$mailfetch_server_[$i_loop] = getPref($data_dir, $username, "mailfetch_server_$i_loop");
$mailfetch_port_[$i_loop] = getPref($data_dir, $username , "mailfetch_port_$i_loop");
$mailfetch_alias_[$i_loop] = getPref($data_dir, $username, "mailfetch_alias_$i_loop");
$mailfetch_user_[$i_loop] = getPref($data_dir, $username, "mailfetch_user_$i_loop");
$mailfetch_lmos_[$i_loop] = getPref($data_dir, $username, "mailfetch_lmos_$i_loop");
$mailfetch_uidl_[$i_loop] = getPref($data_dir, $username, "mailfetch_uidl_$i_loop");
$mailfetch_subfolder_[$i_loop] = getPref($data_dir, $username, "mailfetch_subfolder_$i_loop");
$mailfetch_server=$mailfetch_server_[$i_loop];
$mailfetch_port=$mailfetch_port_[$i_loop];
$mailfetch_user=$mailfetch_user_[$i_loop];
$mailfetch_alias=$mailfetch_alias_[$i_loop];
$mailfetch_pass=$mailfetch_pass_[$i_loop];
$mailfetch_lmos=$mailfetch_lmos_[$i_loop];
$mailfetch_login=$mailfetch_login_[$i_loop];
$mailfetch_uidl=$mailfetch_uidl_[$i_loop];
$mailfetch_subfolder=$mailfetch_subfolder_[$i_loop];
// $outMsg .= "$mailfetch_alias checked<br />";
// $outMsg .= "$mailfetch_alias_[$i_loop]<br />";
$pop3 = new POP3($mailfetch_server, 60);
if (!$pop3->connect($mailfetch_server,$mailfetch_port)) {
$outMsg .= _("Warning:") . ' ' . $pop3->ERROR;
continue;
}
$imap_stream = sqimap_login($username, $key, $imapServerAddress, $imapPort, 10);
$Count = $pop3->login($mailfetch_user, $mailfetch_pass);
if (($Count == false || $Count == -1) && $pop3->ERROR != '') {
$outMsg .= _("Login Failed:") . ' ' . $pop3->ERROR;
continue;
}
// register_shutdown_function($pop3->quit());
$msglist = $pop3->uidl();
$i = 1;
for ($j = 1; $j < sizeof($msglist); $j++) {
if ($msglist["$j"] == $mailfetch_uidl) {
$i = $j+1;
break;
}
}
if ($Count < $i) {
$pop3->quit();
continue;
}
if ($Count == 0) {
$pop3->quit();
continue;
}
// Faster to get them all at once
$mailfetch_uidl = $pop3->uidl();
if (! is_array($mailfetch_uidl) && $mailfetch_lmos == 'on')
$outMsg .= _("Server does not support UIDL.");
for (; $i <= $Count; $i++) {
if (!ini_get('safe_mode'))
set_time_limit(20); // 20 seconds per message max
$Message = "";
$MessArray = $pop3->get($i);
if ( (!$MessArray) or (gettype($MessArray) != "array")) {
$outMsg .= _("Warning:") . ' ' . $pop3->ERROR;
continue 2;
}
while (list($lineNum, $line) = each ($MessArray)) {
$Message .= $line;
}
// check if mail folder is not null and subscribed (There is possible issue with /noselect mail folders)
if ($mailfetch_subfolder=='' ||
! mail_fetch_check_folder($imap_stream,$mailfetch_subfolder)) {
fputs($imap_stream, "A3$i APPEND INBOX {" . strlen($Message) . "}\r\n");
} else {
fputs($imap_stream, "A3$i APPEND $mailfetch_subfolder {" . strlen($Message) . "}\r\n");
}
$Line = fgets($imap_stream, 1024);
if (substr($Line, 0, 1) == '+') {
fputs($imap_stream, $Message);
fputs($imap_stream, "\r\n");
sqimap_read_data($imap_stream, "A3$i", false, $response, $message);
if ($mailfetch_lmos != 'on') {
$pop3->delete($i);
}
} else {
echo "$Line";
$outMsg .= _("Error Appending Message!");
}
}
$pop3->quit();
sqimap_logout($imap_stream);
if (is_array($mailfetch_uidl)) {
setPref($data_dir,$username,"mailfetch_uidl_$i_loop", array_pop($mailfetch_uidl));
}
}
}
if( trim( $outMsg ) <> '' ) {
echo '<br /><font size="1">' . _("Mail Fetch Result:") . "<br />$outMsg</font>";
}
if( $mailfetch_newlog == 'on' ) {
setPref($data_dir, $username, 'mailfetch_newlog', 'off');
}
}
/**
* Internal function used to detect new logins
*/
function mail_fetch_setnew_function() {
global $data_dir;
// FIXME: check if function is already loaded in login_verified hook
include_once(SM_PATH . 'functions/prefs.php');
sqgetGlobalVar('username', $username, SQ_SESSION);
setPref( $data_dir, $username, 'mailfetch_newlog', 'on' );
}
/**
* Internal function used to register option block
* @since 1.5.1
* @private
*/
function mailfetch_optpage_register_block_function() {
global $optpage_blocks;
$optpage_blocks[] = array(
'name' => _("POP3 Fetch Mail"),
'url' => '../plugins/mail_fetch/options.php',
'desc' => _("This configures settings for downloading email from a POP3 mailbox to your account on this server."),
'js' => false
);
}
/**
* Internal function used to update mail_fetch settings
* when folders are renamed or deleted.
* @since 1.5.1
* @private
*/
function mail_fetch_folderact_function($args) {
global $username, $data_dir;
if (empty($args) || !is_array($args)) {
return;
}
/* Should be 3 ars, 1: old folder, 2: action, 3: new folder */
if (count($args) != 3) {
return;
}
list($old_folder, $action, $new_folder) = $args;
$mailfetch_server_number = getPref($data_dir, $username, 'mailfetch_server_number');
for ($i = 0; $i < $mailfetch_server_number; $i++) {
$mailfetch_subfolder = getPref($data_dir, $username, 'mailfetch_subfolder_' . $i);
if ($mailfetch_subfolder != $old_folder) {
continue;
}
if ($action == 'delete') {
setPref($data_dir, $username, 'mailfetch_subfolder_' . $i, 'INBOX');
} elseif ($action == 'rename') {
setPref($data_dir, $username, 'mailfetch_subfolder_' . $i, $new_folder);
}
}
}
// end of hooked functions
/**
* hex2bin - document me
*/
function hex2bin( $data ) {
/* Original code by josh@superfork.com */
$len = strlen($data);
$newdata = '';
for( $i=0; $i < $len; $i += 2 ) {
$newdata .= pack( "C", hexdec( substr( $data, $i, 2) ) );
}
return $newdata;
}
function mf_keyED( $txt ) {
global $MF_TIT;
if( !isset( $MF_TIT ) ) {
$MF_TIT = "MailFetch Secure for SquirrelMail 1.x";
}
$encrypt_key = md5( $MF_TIT );
$ctr = 0;
$tmp = "";
for( $i = 0; $i < strlen( $txt ); $i++ ) {
if( $ctr == strlen( $encrypt_key ) ) $ctr=0;
$tmp.= substr( $txt, $i, 1 ) ^ substr( $encrypt_key, $ctr, 1 );
$ctr++;
}
return $tmp;
}
function encrypt( $txt ) {
srand( (double) microtime() * 1000000 );
$encrypt_key = md5( rand( 0, 32000 ) );
$ctr = 0;
$tmp = "";
for( $i = 0; $i < strlen( $txt ); $i++ ) {
if ($ctr==strlen($encrypt_key)) $ctr=0;
$tmp.= substr($encrypt_key,$ctr,1) .
(substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1));
$ctr++;
}
return bin2hex( mf_keyED( $tmp ) );
}
function decrypt( $txt ) {
$txt = mf_keyED( hex2bin( $txt ) );
$tmp = '';
for ( $i=0; $i < strlen( $txt ); $i++ ) {
$md5 = substr( $txt, $i, 1 );
$i++;
$tmp.= ( substr( $txt, $i, 1 ) ^ $md5 );
}
return $tmp;
}
/**
* check mail folder
* @param stream $imap_stream imap connection resource
* @param string $imap_folder imap folder name
* @return boolean true, when folder can be used to store messages.
* @since 1.5.1 and 1.4.5
*/
function mail_fetch_check_folder($imap_stream,$imap_folder) {
global $mail_fetch_allow_unsubscribed;
// check if folder is subscribed or only exists.
if (sqimap_mailbox_is_subscribed($imap_stream,$imap_folder)) {
$ret = true;
} elseif ($mail_fetch_allow_unsubscribed && sqimap_mailbox_exists($imap_stream,$imap_folder)) {
$ret = true;
} else {
$ret = false;
}
// make sure that folder can store messages
if ($ret && mail_fetch_check_noselect($imap_stream,$imap_folder)) {
$ret = false;
}
return $ret;
}
/**
* Checks if folder is noselect (can't store messages)
*
* Function does not check if folder subscribed.
* @param stream $imap_stream imap connection resource
* @param string $imap_folder imap folder name
* @return boolean true, when folder has noselect flag. false in any other case.
* @since 1.5.1 and 1.4.5
*/
function mail_fetch_check_noselect($imap_stream,$imap_folder) {
$boxes=sqimap_mailbox_list($imap_stream);
foreach($boxes as $box) {
if ($box['unformatted']==$imap_folder) {
return (bool) check_is_noselect($box['raw']);
}
}
return false;
}
?>
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