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<?php
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/*
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Copyright (c) 2007, Till Brehm, projektfarm Gmbh
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All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice,
      this list of conditions and the following disclaimer in the documentation
      and/or other materials provided with the distribution.
    * Neither the name of ISPConfig nor the names of its contributors
      may be used to endorse or promote products derived from this software without
      specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

class system{

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	var $FILE = '/root/ispconfig/scripts/lib/classes/ispconfig_system.lib.php';
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	var $server_id;
	var $server_conf;
	var $data;
	
	/**
	 * Construct for this class
	 *
	 * @return system
	 */
	public function system(){
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		//global $go_info;
	  	//$this->server_id = $go_info['isp']['server_id'];
	  	//$this->server_conf = $go_info['isp']['server_conf'];
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	  	$this->server_conf['passwd_datei'] = '/etc/passwd';
	  	$this->server_conf['shadow_datei'] = '/etc/shadow';
	  	$this->server_conf['group_datei'] = '/etc/group';
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	}
	
	/**
	 * Get the hostname from the server
	 *
	 * @return string
	 */
	public function hostname(){
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		$dist = $this->server_conf['dist'];
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	 	ob_start();
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	  	passthru('hostname');
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	  	$hostname = ob_get_contents();
	  	ob_end_clean();
		$hostname = trim($hostname);
	  	ob_start();
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	  	if(!strstr($dist, 'freebsd')){
	    	passthru('dnsdomainname');
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	  	} else {
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	    	passthru('domainname');
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	  	}
	  	$domainname = ob_get_contents();
	  	ob_end_clean();
	  	$domainname = trim($domainname);
	  	if($domainname != ""){
		    if(!strstr($hostname, $domainname)) $hostname .= ".".$domainname;
	  	}
	  	return $hostname;
	}
	
	/**
	 * Add an user to the system
	 * 
	 */
	public function adduser($user_username, $uid, $gid, $username, $homedir, $shell, $passwort = '*'){
		global $app;
	  	if($this->is_user($user_username)){
	    	return false;
	  	} else {
	    	if(trim($user_username) != '') {
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	        	$user_datei = $this->server_conf['passwd_datei'];
	            $shadow_datei = $this->server_conf['shadow_datei'];
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	            $shell = realpath($shell);
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	            if(trim($passwort) == '') $passwort = '*';
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	            $new_user = "\n$user_username:x:$uid:$gid:$username:$homedir:$shell\n";
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	            $app->log->msg('USER: '.$new_user);
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	            $app->file->af($user_datei, $new_user);
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	            if($shadow_datei == '/etc/shadow'){
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	            	$datum = time();
	                $tage = floor($datum/86400);
	                $new_passwd = "\n$user_username:$passwort:$tage:0:99999:7:::\n";
	            } else {
	                $new_passwd = "\n$user_username:$passwort:$uid:$gid::0:0:$username:$homedir:$shell\n";
	            }
	            $app->file->af($shadow_datei, $new_passwd);
				// TB: leere Zeilen entfernen
	            $app->file->remove_blank_lines($shadow_datei);
	            $app->file->remove_blank_lines($user_datei);
	            // TB: user Sortierung deaktiviert
	            //$this->order_users_groups();
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	            if($shadow_datei != '/etc/shadow'){
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	            	$app->file->af($shadow_datei, "\n");
					// TB: leere Zeilen entfernen
	                $app->file->remove_blank_lines($shadow_datei);
					$app->log->caselog("pwd_mkdb $shadow_datei &> /dev/null", $this->FILE, __LINE__);
	            }
	            return true;
	        }
	  }
	}
	
	/**
	 * Update users when someone edit it
	 *
	 */
	function updateuser($user_username, $uid, $gid, $username, $homedir, $shell, $passwort = '*'){
		//* First delete the users
		$this->deluser($user_username);
		//* Add the user again
	  	$this->adduser($user_username, $uid, $gid, $username, $homedir, $shell, $passwort);
	}
	
	/**
	 * Lock the user
	 *
	 */
	function deactivateuser($user_username){
		$passwort = str_rot13($this->getpasswd($user_username));
	  	$user_attr = $this->get_user_attributes($user_username);
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	  	$uid = $user_attr['uid'];
	  	$gid = $user_attr['gid'];
	  	$username = $user_attr['name'];
	  	$homedir = $user_attr['homedir'];
	  	$shell = '/dev/null';
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	  	$this->deluser($user_username);
	  	$this->adduser($user_username, $uid, $gid, $username, $homedir, $shell, $passwort);
	}
	/**
	 * Delete a user from the system
	 *
	 */
	function deluser($user_username){
		global $app;
	  	if($this->is_user($user_username)){
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	    	$user_datei = $this->server_conf['passwd_datei'];
	    	$shadow_datei = $this->server_conf['shadow_datei'];
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	    	$users = $app->file->rf($user_datei);
	    	$lines = explode("\n", $users);
	    	if(is_array($lines)){
	      		$num_lines = sizeof($lines);
	      		for($i=0;$i<$num_lines;$i++){
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	        		if(trim($lines[$i]) != ''){
	          			list($f1,) = explode(':', $lines[$i]);
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	          			if($f1 != $user_username) $new_lines[] = $lines[$i];
	        		}
	      		}
	      		$new_users = implode("\n", $new_lines);
	      		$app->file->wf($user_datei, $new_users);
	      		unset($new_lines);
	      		unset($lines);
	      		unset($new_users);
	    	}
	    	$app->file->remove_blank_lines($user_datei);
	
	    	$passwds = $app->file->rf($shadow_datei);
	    	$lines = explode("\n", $passwds);
	    	if(is_array($lines)){
	      		$num_lines = sizeof($lines);
	      		for($i=0;$i<$num_lines;$i++){
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	        		if(trim($lines[$i]) != ''){
	          			list($f1,) = explode(':', $lines[$i]);
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	          			if($f1 != $user_username) $new_lines[] = $lines[$i];
	        		}
	      		}
	      		$new_passwds = implode("\n", $new_lines);
	      		$app->file->wf($shadow_datei, $new_passwds);
	      		unset($new_lines);
	      		unset($lines);
	      		unset($new_passwds);
	    	}
	    	$app->file->remove_blank_lines($shadow_datei);
	
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	    	$group_file = $app->file->rf($this->server_conf['group_datei']);
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	    	$group_file_lines = explode("\n", $group_file);
	    	foreach($group_file_lines as $group_file_line){
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	      		if(trim($group_file_line) != ''){
	        		list($f1, $f2, $f3, $f4) = explode(':', $group_file_line);
	        		$group_users = explode(',', str_replace(' ', '', $f4));
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	        		if(in_array($user_username, $group_users)){
	          			$g_users = array();
	          			foreach($group_users as $group_user){
	            			if($group_user != $user_username) $g_users[] = $group_user;
	          			}
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	          			$f4 = implode(',', $g_users);
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	        		}
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	        		$new_group_file[] = $f1.':'.$f2.':'.$f3.':'.$f4;
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	      		}
	    	}
	    	$new_group_file = implode("\n", $new_group_file);
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	    	$app->file->wf($this->server_conf['group_datei'], $new_group_file);
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	    	// TB: auskommentiert
	        //$this->order_users_groups();
	
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	    	if($shadow_datei != '/etc/shadow'){
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	      		$app->file->af($shadow_datei, "\n");
	      		$app->log->caselog("pwd_mkdb $shadow_datei &> /dev/null", $this->FILE, __LINE__);
	    	}
	    	return true;
	  	} else {
	    	return false;
	  	}
	}
	
	/**
	 * Add a usergroup to the system
	 *
	 */
	function addgroup($group, $gid, $members = ''){
		global $app;
	  	if($this->is_group($group)){
		    return false;
	  	} else {
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	    	$group_datei = $this->server_conf['group_datei'];
	    	$shadow_datei = $this->server_conf['shadow_datei'];
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	    	$new_group = "\n$group:x:$gid:$members\n";
	    	$app->file->af($group_datei, $new_group);
	
	        // TB: auskommentiert
	        //$this->order_users_groups();
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	    	if($shadow_datei != '/etc/shadow'){
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	      		$app->log->caselog("pwd_mkdb $shadow_datei &> /dev/null", $this->FILE, __LINE__);
	    	}
	    	return true;
	  	}
	}
	
	/**
	 * Update usersgroup in way to delete and add it again
	 *
	 */
	function updategroup($group, $gid, $members = ''){
		$this->delgroup($group);
	  	$this->addgroup($group, $gid, $members);
	}
	
	/**
	 * Delete a usergroup from the system
	 *
	 */
	function delgroup($group){
		global $app;
	  	if($this->is_group($group)){
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	    	$group_datei = $this->server_conf['group_datei'];
	    	$shadow_datei = $this->server_conf['shadow_datei'];
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	    	$groups = $app->file->rf($group_datei);
	    	$lines = explode("\n", $groups);
	    	if(is_array($lines)){
	      		$num_lines = sizeof($lines);
	      		for($i=0;$i<$num_lines;$i++){
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	        		if(trim($lines[$i]) != ''){
	          			list($f1,) = explode(':', $lines[$i]);
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	          			if($f1 != $group) $new_lines[] = $lines[$i];
	        		}
	      		}
	      		$new_groups = implode("\n", $new_lines);
	      		$app->file->wf($group_datei, $new_groups);
	      		unset($new_lines);
	      		unset($lines);
	      		unset($new_groups);
	    	}
	        // TB: auskommentiert
	    	//$this->order_users_groups();
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	    	if($shadow_datei != '/etc/shadow'){
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	      		$app->log->caselog("pwd_mkdb $shadow_datei &> /dev/null", $this->FILE, __LINE__);
	    	}
	    	return true;
	  	} else {
	    	return false;
	  	}
	}
	/**
	 * Order usergroups
	 *
	 */
	function order_users_groups(){
		global $app;
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	  	$user_datei = $this->server_conf['passwd_datei'];
	  	$shadow_datei = $this->server_conf['shadow_datei'];
	  	$group_datei = $this->server_conf['group_datei'];
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	  	$groups = $app->file->no_comments($group_datei);
	  	$lines = explode("\n", $groups);
	  	if(is_array($lines)){
		    foreach($lines as $line){
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	      		if(trim($line) != ''){
	        		list($f1, $f2, $f3, $f4) = explode(':', $line);
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	        		$arr[$f3] = $line;
	      		}
	    	}
	  	}
	  	ksort($arr);
	  	reset($arr);
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	  	if($shadow_datei != '/etc/shadow'){
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	    	$app->file->wf($group_datei, $app->file->remove_blank_lines(implode("\n", $arr), 0)."\n");
	  	}else {
		    $app->file->wf($group_datei, $app->file->remove_blank_lines(implode("\n", $arr), 0));
	  	}
	  	unset($arr);
	
	  	$users = $app->file->no_comments($user_datei);
	  	$lines = explode("\n", $users);
	  	if(is_array($lines)){
		    foreach($lines as $line){
	      		if(trim($line) != ""){
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	        		list($f1, $f2, $f3,) = explode(':', $line);
	        		if($f1 != 'toor'){
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	          			$arr[$f3] = $line;
	        		} else {
	          			$arr[70000] = $line;
	        		}
	      		}
	    	}
	  	}
	  	ksort($arr);
	  	reset($arr);
	  	$app->file->wf($user_datei, $app->file->remove_blank_lines(implode("\n", $arr), 0));
	  	unset($arr);
	
	  	$passwds = $app->file->no_comments($shadow_datei);
	  	$lines = explode("\n", $passwds);
	  	if(is_array($lines)){
		    foreach($lines as $line){
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	    		if(trim($line) != ''){
	        		list($f1, $f2, $f3,) = explode(':', $line);
	        		if($f1 != 'toor'){
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	          			$uid = $this->getuid($f1);
	          			if(!is_bool($uid)) $arr[$uid] = $line;
	        		} else {
	          			$arr[70000] = $line;
	        		}
	      		}
	    	}
	  	}
	  	ksort($arr);
	  	reset($arr);
	  	$app->file->wf($shadow_datei, $app->file->remove_blank_lines(implode("\n", $arr), 0));
	  	unset($arr);
	}
	
	/**
	 * Find a user / group id
	 *
	 */
	function find_uid_gid($min, $max){
		global $app;
	  	if($min < $max && $min >= 0 && $max >= 0 && $min <= 65536 && $max <= 65536 && is_int($min) && is_int($max)){
	    	for($i=$min;$i<=$max;$i++){
	      		$uid_arr[$i] = $gid_arr[$i] = 1;
	    	}
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	    	$user_datei = $this->server_conf['passwd_datei'];
	    	$group_datei = $this->server_conf['group_datei'];
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	    	$users = $app->file->no_comments($user_datei);
	    	$lines = explode("\n", $users);
	    	if(is_array($lines)){
	      		foreach($lines as $line){
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	        		if(trim($line) != ''){
	          			list($f1, $f2, $f3, $f4, $f5, $f6, $f7) = explode(':', $line);
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	          			if($f3 >= $min && $f3 <= $max) unset($uid_arr[$f3]);
	        		}
	      		}
	      		if(!empty($uid_arr)){
	        		foreach($uid_arr as $key => $val){
	          			$uids[] = $key;
	        		}
	        		$min_uid = min($uids);
	        		unset($uid_arr);
	      		} else {
	        		return false;
	      		}
	    	}
	
	    	$groups = $app->file->no_comments($group_datei);
	    	$lines = explode("\n", $groups);
	    	if(is_array($lines)){
	      		foreach($lines as $line){
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	        		if(trim($line) != ''){
	          			list($f1, $f2, $f3, $f4) = explode(':', $line);
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	          			if($f3 >= $min && $f3 <= $max) unset($gid_arr[$f3]);
	        		}
	      		}
	      		if(!empty($gid_arr)){
	        		foreach($gid_arr as $key => $val){
	          			$gids[] = $key;
	        		}
	        		$min_gid = min($gids);
	        		unset($gid_arr);
	      		} else {
	        		return false;
	      		}
	    	}
	
	    	$result = array_intersect($uids, $gids);
	    	$new_id = (max($result));
	    	unset($uids);
	    	unset($gids);
	    	unset($result);
	    	if($new_id <= $max){
	      		return $new_id;
	    	} else {
	      		return false;
	    	}
	  	} else {
	    	return false;
	  	}
	}
	
	/**
	 * Check if the users is really a user into the system
	 *
	 */
	function is_user($user){
		global $app;
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	  	$user_datei = $this->server_conf['passwd_datei'];
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	  	$users = $app->file->no_comments($user_datei);
	  	$lines = explode("\n", $users);
	  	if(is_array($lines)){
			foreach($lines as $line){
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	      		if(trim($line) != ''){
	        		list($f1, $f2, $f3, $f4, $f5, $f6, $f7) = explode(':', $line);
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	        		if($f1 == $user) return true;
	      		}
	    	}
	  	}
	  	return false;
	}
	
	/**
	 * Check if the group is on this system
	 *
	 */
	function is_group($group){
		global $app;
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	  	$group_datei = $this->server_conf['group_datei'];
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	  	$groups = $app->file->no_comments($group_datei);
	  	$lines = explode("\n", $groups);
	  	if(is_array($lines)){
		    foreach($lines as $line){
	      		if(trim($line) != ""){
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	        		list($f1, $f2, $f3, $f4) = explode(':', $line);
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	        		if($f1 == $group) return true;
	      		}
	    	}
	  	}
	  	return false;
	}
	
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	/*
	// Alternative implementation of the is_group function. Should be faster then the old one To be tested.
	function is_group($group) {
	$groupfile = '/etc/group';
	if(is_file($groupfile)) {
		$handle = fopen ($groupfile, "r");
		while (!feof($handle)) {
			$line = trim(fgets($handle, 4096));
			if($line != ""){
				$parts = explode(":", $line);
	        	if($parts[0] == $group) {
					fclose ($handle);
					return true;
				}
			}
		}
		fclose ($handle);
	}
	return false;
	}
	*/
	
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	function root_group(){
		global $app;
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	  	$group_datei = $this->server_conf['group_datei'];
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	  	$groups = $app->file->no_comments($group_datei);
	  	$lines = explode("\n", $groups);
	  	if(is_array($lines)){
		    foreach($lines as $line){
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	      		if(trim($line) != ''){
	        		list($f1, $f2, $f3, $f4) = explode(':', $line);
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	        		if($f3 == 0) return $f1;
	      		}
	    	}
	  	}
	  	return false;
	}
	
	/**
	 * Get the groups of an user
	 *
	 */
	function get_user_groups($username){
		global $app;
	  	$user_groups = array();
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	  	$group_datei = $this->server_conf['group_datei'];
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	  	$groups = $app->file->no_comments($group_datei);
	  	$lines = explode("\n", $groups);
	  	if(is_array($lines)){
	    	foreach($lines as $line){
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	      		if(trim($line) != ''){
	        		list($f1, $f2, $f3, $f4) = explode(':', $line);
	        		if(intval($f3) < intval($this->server_conf['groupid_von']) && trim($f1) != 'users'){
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	          			$tmp_group_users = explode(',', str_replace(' ', '', $f4));
	          			if(in_array($username, $tmp_group_users) && trim($f1) != '') $user_groups[] = $f1;
	          			unset($tmp_group_users);
	        		}
	      		}
	    	}
	  	}
	  	if(!empty($user_groups)) return implode(',', $user_groups);
	  	return '';
	}
	
	/**
	 * Get a user password
	 *
	 */
	function getpasswd($user){
		global $app;
	  	if($this->is_user($user)){
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		    $shadow_datei = $this->server_conf['shadow_datei'];
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	    	$passwds = $app->file->no_comments($shadow_datei);
	    	$lines = explode("\n", $passwds);
	    	if(is_array($lines)){
	      		foreach($lines as $line){
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	        		if(trim($line) != ''){
	          			list($f1, $f2,) = explode(':', $line);
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	          			if($f1 == $user) return $f2;
	        		}
	      		}
	    	}
	  	} else {
		    return false;
	  	}
	}
	
	/**
	 * Get the user id from an user
	 *
	 */
	function getuid($user){
		global $app;
	  	if($this->is_user($user)){
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		    $user_datei = $this->server_conf['passwd_datei'];
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	    	$users = $app->file->no_comments($user_datei);
	    	$lines = explode("\n", $users);
	    	if(is_array($lines)){
	      		foreach($lines as $line){
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	        		if(trim($line) != ''){
	          			list($f1, $f2, $f3,) = explode(':', $line);
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	          			if($f1 == $user) return $f3;
	        		}
	      		}
	    	}
	  	} else {
		    return false;
	  	}
	}
	
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	/**
	 * Get the group id from an group
	 *
	 */
	function getgid($group){
		global $app;
	  	if($this->is_group($group)){
		    $group_datei = $this->server_conf['group_datei'];
			$groups = $app->file->no_comments($group_datei);
			$lines = explode("\n", $groups);
			if(is_array($lines)){
		    foreach($lines as $line){
					if(trim($line) != ""){
						list($f1, $f2, $f3, $f4) = explode(':', $line);
						if($f1 == $group) return $f3;
					}
				}
			}
	  	} else {
		    return false;
	  	}
	}
	
	/**
	* Return info about a group by name
	*
	*/
	function posix_getgrnam($group) {
		if(!function_exists('posix_getgrnam')){
			$group_datei = $this->server_conf['group_datei'];
			$cmd = 'grep -m 1 "^'.$group.':" '.$group_datei;
			exec($cmd, $output, $return_var);
			if($return_var != 0 || !$output[0]) return false;
			list($f1, $f2, $f3, $f4) = explode(':', $output[0]);
			$f2 = trim($f2);
			$f3 = trim($f3);
			$f4 = trim($f4);
			if($f4 != ''){
				$members = explode(',', $f4);
			} else {
				$members = array();
			}
			$group_details = array(	'name' => $group,
									'passwd' => $f2,
									'members' => $members,
									'gid' => $f3);
			return $group_details;	
		} else {
			return posix_getgrnam($group);
		}
    }
	
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	/**
	 * Get all information from a user
	 *
	 */
	function get_user_attributes($user){
		global $app;
	  	if($this->is_user($user)){
636
	    	$user_datei = $this->server_conf['passwd_datei'];
637 638 639 640
	    	$users = $app->file->no_comments($user_datei);
	    	$lines = explode("\n", $users);
	    	if(is_array($lines)){
	      		foreach($lines as $line){
641 642
	        		if(trim($line) != ''){
	          			list($f1, $f2, $f3, $f4, $f5, $f6, $f7) = explode(':', $line);
643
	          			if($f1 == $user){
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	            			$user_attr['username'] = $f1;
	            			$user_attr['x'] = $f2;
	            			$user_attr['uid'] = $f3;
	            			$user_attr['gid'] = $f4;
	            			$user_attr['name'] = $f5;
	            			$user_attr['homedir'] = $f6;
	            			$user_attr['shell'] = $f7;
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	            			return $user_attr;
	          			}
	        		}
	      		}
	    	}
	  	} else {
	    	return false;
	  	}
	}
	
	/**
	 * Edit the owner of a file
	 *
	 */
665
	function chown($file, $owner, $allow_symlink = false){
666
	  global $app;
667 668 669
	  if($allow_symlink == false && $this->checkpath($file) == false) {
		$app->log("Action aborted, file is a symlink: $file",LOGLEVEL_WARN);
		return false;
670
	  }
671
	  if(file_exists($file)) {
672 673 674 675 676 677
		if(@chown($file, $owner)) {
			return true;
		} else {
			$app->log("chown failed: $file : $owner",LOGLEVEL_DEBUG);
			return false;
		}
678
	  }
679 680 681
	}
	
	function chgrp($file, $group = '', $allow_symlink = false){
682
	  global $app;
683 684 685
	  if($allow_symlink == false && $this->checkpath($file) == false) {
		$app->log("Action aborted, file is a symlink: $file",LOGLEVEL_WARN);
		return false;
686
	  }
687
	  if(file_exists($file)) {
688 689 690 691 692 693
		if(@chgrp($file, $group)) {
			return true;
		} else {
			$app->log("chgrp failed: $file : $group",LOGLEVEL_DEBUG);
			return false;
		}
694
	  }
695 696 697 698
	}
	
	//* Change the mode of a file
	function chmod($file, $mode, $allow_symlink = false) {
699
		global $app;
700 701 702 703
		if($allow_symlink == false && $this->checkpath($file) == false) {
			$app->log("Action aborted, file is a symlink: $file",LOGLEVEL_WARN);
			return false;
		}
704 705 706 707 708 709
		if(@chmod($file, $mode)) {
			return true;
		} else {
			$app->log("chmod failed: $file : $mode",LOGLEVEL_DEBUG);
			return false;
		}
710 711 712
	}
	
	function file_put_contents($filename, $data, $allow_symlink = false) {
713
		global $app;
714 715 716 717
		if($allow_symlink == false && $this->checkpath($filename) == false) {
			$app->log("Action aborted, file is a symlink: $filename",LOGLEVEL_WARN);
			return false;
		}
718
		if(file_exists($filename)) unlink($filename);
719 720 721 722
		return file_put_contents($filename, $data);
	}
	
	function file_get_contents($filename, $allow_symlink = false) {
723
		global $app;
724 725 726 727
		if($allow_symlink == false && $this->checkpath($filename) == false) {
			$app->log("Action aborted, file is a symlink: $filename",LOGLEVEL_WARN);
			return false;
		}
728
		return file_get_contents($filename, $data);
729 730 731
	}
	
	function rename($filename, $new_filename, $allow_symlink = false) {
732
		global $app;
733 734 735 736 737 738 739 740
		if($allow_symlink == false && $this->checkpath($filename) == false) {
			$app->log("Action aborted, file is a symlink: $filename",LOGLEVEL_WARN);
			return false;
		}
		return rename($filename, $new_filename);
	}
	
	function mkdir($dirname, $allow_symlink = false) {
741
		global $app;
742 743 744 745
		if($allow_symlink == false && $this->checkpath($dirname) == false) {
			$app->log("Action aborted, file is a symlink: $dirname",LOGLEVEL_WARN);
			return false;
		}
746 747 748 749 750 751
		if(@mkdir($dirname)) {
			return true;
		} else {
			$app->log("mkdir failed: $dirname",LOGLEVEL_DEBUG);
			return false;
		}
752 753
	}
	
754
	function unlink($filename) {
755
		if(file_exists($filename) || is_link($filename)) {
756 757
			return unlink($filename);
		}
758 759 760 761 762 763
	}
	
	function copy($file1,$file2) {
		return copy($file1,$file2);
	}
	
764 765 766 767 768 769 770 771 772 773 774 775 776
	function touch($file, $allow_symlink = false){
	  global $app;
	  if($allow_symlink == false && @file_exists($file) && $this->checkpath($file) == false) {
		$this->unlink($file);
	  }
	  if(@touch($file)) {
			return true;
	  } else {
			$app->log("touch failed: $file",LOGLEVEL_DEBUG);
			return false;
	  }
	}
	
777 778 779 780 781 782
	function checkpath($path) {
		$path = trim($path);
		//* We allow only absolute paths
		if(substr($path,0,1) != '/') return false;
		
		//* We allow only some characters in the path
783 784
		// * is allowed, for example it is part of wildcard certificates/keys: *.example.com.crt
		if(!preg_match('@^/[-a-zA-Z0-9_/.*~]{1,}$@',$path)) return false;
785 786
		
		//* Check path for symlinks
787
		$path_parts = explode('/',$path);
788 789 790 791 792 793 794
		$testpath = '';
		foreach($path_parts as $p) {
			$testpath .= '/'.$p;
			if(is_link($testpath)) return false;
		}
		
		return true;
795 796 797 798 799 800 801 802
	}
	
	/**
	 * Add an user to a specific group
	 *
	 */
	function add_user_to_group($group, $user = 'admispconfig'){
		global $app;
803
	  	$group_file = $app->file->rf($this->server_conf['group_datei']);
804 805
	  	$group_file_lines = explode("\n", $group_file);
	  	foreach($group_file_lines as $group_file_line){
806
		    list($group_name,$group_x,$group_id,$group_users) = explode(':',$group_file_line);
807
	    	if($group_name == $group){
808
	      		$group_users = explode(',', str_replace(' ', '', $group_users));
809 810 811
	      		if(!in_array($user, $group_users)){
	        		$group_users[] = $user;
	      		}
812 813 814
	      		$group_users = implode(',', $group_users);
	      		if(substr($group_users,0,1) == ',') $group_users = substr($group_users,1);
	      		$group_file_line = $group_name.':'.$group_x.':'.$group_id.':'.$group_users;
815 816 817 818
	    	}
	    	$new_group_file[] = $group_file_line;
	  	}
	  	$new_group_file = implode("\n", $new_group_file);
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	  	$app->file->wf($this->server_conf['group_datei'], $new_group_file);
	  	$app->file->remove_blank_lines($this->server_conf['group_datei']);
	  	if($this->server_conf['shadow_datei'] != '/etc/shadow'){
		    $app->log->caselog('pwd_mkdb '.$this->server_conf['shadow_datei'].' &> /dev/null', $this->FILE, __LINE__);
823 824 825
	  	}
	}
	
826
	/*
827 828 829
	function usermod($user, $groups){
		global $app;
	  	if($this->is_user($user)){
830 831
		    $groups = explode(',', str_replace(' ', '', $groups));
	    	$group_file = $app->file->rf($this->server_conf['group_datei']);
832 833 834
	    	$group_file_lines = explode("\n", $group_file);
	    	foreach($group_file_lines as $group_file_line){
	      		if(trim($group_file_line) != ""){
835 836
	        		list($f1, $f2, $f3, $f4) = explode(':', $group_file_line);
	        		$group_users = explode(',', str_replace(' ', '', $f4));
837 838 839 840 841 842
	        		if(!in_array($f1, $groups)){
	          			if(in_array($user, $group_users)){
	            			$g_users = array();
	            			foreach($group_users as $group_user){
	              				if($group_user != $user) $g_users[] = $group_user;
	            			}
843
	            			$f4 = implode(',', $g_users);
844 845 846
	          			}
		        	} else {
	          			if(!in_array($user, $group_users)){
847
	            			if(trim($group_users[0]) == '') unset($group_users);
848 849
	            			$group_users[] = $user;
	          			}
850
	          			$f4 = implode(',', $group_users);
851
	        		}
852
	        		$new_group_file[] = $f1.':'.$f2.':'.$f3.':'.$f4;
853 854 855
	      		}
	    	}
	    	$new_group_file = implode("\n", $new_group_file);
856 857 858 859
	    	$app->file->wf($this->server_conf['group_datei'], $new_group_file);
	    	$app->file->remove_blank_lines($this->server_conf['group_datei']);
	    	if($this->server_conf['shadow_datei'] != '/etc/shadow'){
	      		$app->log->caselog('pwd_mkdb '.$this->server_conf['shadow_datei'].' &> /dev/null', $this->FILE, __LINE__);
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	    	}
	    	return true;
	  	} else {
		    return false;
	  	}
	}
866
	*/
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	/**boot autostart etc
	 *
	 */
	function rc_edit($service, $rl, $action){
		// $action = "on|off";
	  	global $app;
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	  	$dist_init_scripts = $app->system->server_conf['dist_init_scripts'];
	  	$dist_runlevel = $app->system->server_conf['dist_runlevel'];
	  	$dist = $app->system->server_conf['dist'];
	  	if(trim($dist_runlevel) == ''){ // falls es keine runlevel gibt (FreeBSD)
		    if($action == 'on'){
	    		@symlink($dist_init_scripts.'/'.$service, $dist_init_scripts.'/'.$service.'.sh');
880
	    	}
881 882 883
	    	if($action == 'off'){
	      		if(is_link($dist_init_scripts.'/'.$service.'.sh')){
	        		unlink($dist_init_scripts.'/'.$service.'.sh');
884
	      		} else {
885
	        		rename($dist_init_scripts.'/'.$service.'.sh',$dist_init_scripts.'/'.$service);
886 887 888 889
	      		}
	    	}
	  	} else { // Linux
	    	if(substr($dist, 0,4) == 'suse'){
890
	      		if($action == 'on'){
891 892
	        		exec("chkconfig --add $service &> /dev/null");
	      		}
893
	      		if($action == 'off'){
894 895 896
	        		exec("chkconfig --del $service &> /dev/null");
	      		}
	    	} else {
897
	      		$runlevels = explode(',', $rl);
898 899
	      		foreach($runlevels as $runlevel){
	        		$runlevel = trim($runlevel);
900 901
	        		if($runlevel != '' && is_dir($dist_runlevel.'/rc'.$runlevel.'.d')){
	          			$handle=opendir($dist_runlevel.'/rc'.$runlevel.'.d');
902
	          			while($file = readdir($handle)){
903 904 905
	            			if($file != '.' && $file != '..'){
	              				$target = @readlink($dist_runlevel.'/rc'.$runlevel.'.d/'.$file);
	              				if(strstr($file, $service) && strstr($target, $service) && substr($file,0,1) == 'S') $ln_arr[$runlevel][] = $dist_runlevel.'/rc'.$runlevel.'.d/'.$file;
906 907 908 909
	            			}
	          			}
	          			closedir($handle);
	        		}
910 911
	        		if($action == 'on'){
	          			if(!is_array($ln_arr[$runlevel])) @symlink($dist_init_scripts.'/'.$service, $dist_runlevel.'/rc'.$runlevel.'.d/S99'.$service);
912
	        		}
913
	        		if($action == 'off'){
914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012
	          			if(is_array($ln_arr[$runlevel])){
	            			foreach($ln_arr[$runlevel] as $link){
	              				unlink($link);
	            			}
	          			}
	        		}
	      		}
	    	}
	  	}
	}
	
	/**
	 * Filter information from the commands
	 *
	 */
	function grep($content, $string, $params = ''){
		global $app;
	  	// params: i, v, w
	  	$content = $app->file->unix_nl($content);
	  	$lines = explode("\n", $content);
	  	foreach($lines as $line){
	    	if(!strstr($params, 'w')){
	      		if(strstr($params, 'i')){
	        		if(strstr($params, 'v')){
	          			if(!stristr($line, $string)) $find[] = $line;
	        		} else {
	          			if(stristr($line, $string)) $find[] = $line;
	        		}
	      		} else {
	        		if(strstr($params, 'v')){
	          			if(!strstr($line, $string)) $find[] = $line;
	        		} else {
	          			if(strstr($line, $string)) $find[] = $line;
	        		}
	      		}
	    	} else {
	      		if(strstr($params, 'i')){
	        		if(strstr($params, 'v')){
	          			if(!$app->string->is_word($string, $line, 'i')) $find[] = $line;
	        		} else {
	          			if($app->string->is_word($string, $line, 'i')) $find[] = $line;
	        		}
	      		} else {
	        		if(strstr($params, 'v')){
	          			if(!$app->string->is_word($string, $line)) $find[] = $line;
	        		} else {
	          			if($app->string->is_word($string, $line)) $find[] = $line;
	        		}
	      		}
	    	}
	  	}
	  	if(is_array($find)){
		    $ret_val = implode("\n", $find);
	    	if(substr($ret_val,-1) != "\n") $ret_val .= "\n";
	    	$find = NULL;
	    	return $ret_val;
	  	} else {
		    return false;
	  	}
	}
	
	/**
	 * Strip content from fields
	 *
	 */
	function cut($content, $field, $delimiter = ':'){
		global $app;
	  	$content = $app->file->unix_nl($content);
	  	$lines = explode("\n", $content);
	  	foreach($lines as $line){
	    	$elms = explode($delimiter, $line);
	    	$find[] = $elms[($field-1)];
	  	}
	  	if(is_array($find)){
		    $ret_val = implode("\n", $find);
		    if(substr($ret_val,-1) != "\n") $ret_val .= "\n";
		    $find = NULL;
	    	return $ret_val;
	  	} else {
		    return false;
	  	}
	}
	
	/**
	 * Get the content off a file
	 *
	 */
	function cat($file){
		global $app;
	  	return $app->file->rf($file);
	}
	
	/**
	 * Control services to restart etc
	 *
	 */
	function daemon_init($daemon, $action){
		//* $action = start|stop|restart|reload
	  	global $app;
1013 1014 1015
	  	$dist = $this->server_conf['dist'];
	  	$dist_init_scripts = $this->server_conf['dist_init_scripts'];
	  	if(!strstr($dist, 'freebsd')){
1016 1017
		    $app->log->caselog("$dist_init_scripts/$daemon $action &> /dev/null", $this->FILE, __LINE__);
	  	} else {
1018 1019 1020
		    if(is_file($dist_init_scripts.'/'.$daemon.'.sh') || is_link($dist_init_scripts.'/'.$daemon.'.sh')){
	      		if($action == 'start' || $action == 'stop'){
	        		$app->log->caselog($dist_init_scripts.'/'.$daemon.'.sh '.$action.' &> /dev/null', $this->FILE, __LINE__);
1021
	      		} else {
1022
	        		$app->log->caselog($dist_init_scripts.'/'.$daemon.'.sh stop &> /dev/null', $this->FILE, __LINE__);
1023
	        		sleep(3);
1024
	        		$app->log->caselog($dist_init_scripts.'/'.$daemon.'.sh start &> /dev/null', $this->FILE, __LINE__);
1025 1026
	      		}
	    	} else {
1027 1028 1029
	      		if(is_file($dist_init_scripts.'/'.$daemon) || is_link($dist_init_scripts.'/'.$daemon)){
	        		if($action == 'start' || $action == 'stop'){
	          			$app->log->caselog($dist_init_scripts.'/'.$daemon.' '.$action.' &> /dev/null', $this->FILE, __LINE__);
1030
	        		} else {
1031
	          			$app->log->caselog($dist_init_scripts.'/'.$daemon.' stop &> /dev/null', $this->FILE, __LINE__);
1032
	          			sleep(3);
1033
	          			$app->log->caselog($dist_init_scripts.'/'.$daemon.' start &> /dev/null', $this->FILE, __LINE__);
1034 1035
	        		}
	      		} else {
1036 1037 1038
	        		if(is_file('/etc/rc.d/'.$daemon) || is_link('/etc/rc.d/'.$daemon)){
	          			if($action == 'start' || $action == 'stop'){
	            			$app->log->caselog('/etc/rc.d/'.$daemon.' '.$action.' &> /dev/null', $this->FILE, __LINE__);
1039
	          			} else {
1040
	            			$app->log->caselog('/etc/rc.d/'.$daemon.' stop &> /dev/null', $this->FILE, __LINE__);
1041
	            			sleep(3);
1042
	            			$app->log->caselog('/etc/rc.d/'.$daemon.' start &> /dev/null', $this->FILE, __LINE__);
1043 1044 1045 1046 1047 1048 1049 1050
	          			}
	        		}
		      	}
	    	}
	  	}
	}
	
	function netmask($netmask){
1051 1052 1053 1054 1055 1056 1057
	  list($f1,$f2,$f3,$f4) = explode('.', trim($netmask));
	  $bin = str_pad(decbin($f1),8,'0',STR_PAD_LEFT).str_pad(decbin($f2),8,'0',STR_PAD_LEFT).str_pad(decbin($f3),8,'0',STR_PAD_LEFT).str_pad(decbin($f4),8,'0',STR_PAD_LEFT);
	  $parts = explode('0', $bin);
	  $bin = str_pad($parts[0], 32, '0', STR_PAD_RIGHT);
	  $bin = wordwrap($bin, 8, '.', 1);
	  list($f1,$f2,$f3,$f4) = explode('.', trim($bin));
	  return bindec($f1).'.'.bindec($f2).'.'.bindec($f3).'.'.bindec($f4);
1058 1059 1060
	}
	
	function binary_netmask($netmask){
1061 1062 1063 1064
	  list($f1,$f2,$f3,$f4) = explode('.', trim($netmask));
	  $bin = str_pad(decbin($f1),8,'0',STR_PAD_LEFT).str_pad(decbin($f2),8,'0',STR_PAD_LEFT).str_pad(decbin($f3),8,'0',STR_PAD_LEFT).str_pad(decbin($f4),8,'0',STR_PAD_LEFT);
	  $parts = explode('0', $bin);
	  return substr_count($parts[0], '1');
1065 1066 1067 1068
	}
	
	function network($ip, $netmask){
	  $netmask = $this->netmask($netmask);
1069 1070 1071 1072
	  list($f1,$f2,$f3,$f4) = explode('.', $netmask);
	  $netmask_bin = str_pad(decbin($f1),8,'0',STR_PAD_LEFT).str_pad(decbin($f2),8,'0',STR_PAD_LEFT).str_pad(decbin($f3),8,'0',STR_PAD_LEFT).str_pad(decbin($f4),8,'0',STR_PAD_LEFT);
	  list($f1,$f2,$f3,$f4) = explode('.', $ip);
	  $ip_bin = str_pad(decbin($f1),8,'0',STR_PAD_LEFT).str_pad(decbin($f2),8,'0',STR_PAD_LEFT).str_pad(decbin($f3),8,'0',STR_PAD_LEFT).str_pad(decbin($f4),8,'0',STR_PAD_LEFT);
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	  for($i=0;$i<32;$i++){
	    $network_bin .= substr($netmask_bin,$i,1) * substr($ip_bin,$i,1);
	  }
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	  $network_bin = wordwrap($network_bin, 8, '.', 1);
	  list($f1,$f2,$f3,$f4) = explode('.', trim($network_bin));
	  return bindec($f1).'.'.bindec($f2).'.'.bindec($f3).'.'.bindec($f4);
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	}
	
	/**
	 * Make a broadcast address from an IP number in combination with netmask
	 *
	 */
	function broadcast($ip, $netmask){
		$netmask = $this->netmask($netmask);
	  	$binary_netmask = $this->binary_netmask($netmask);
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	  	list($f1,$f2,$f3,$f4) = explode('.', $ip);
	  	$ip_bin = str_pad(decbin($f1),8,'0',STR_PAD_LEFT).str_pad(decbin($f2),8,'0',STR_PAD_LEFT).str_pad(decbin($f3),8,'0',STR_PAD_LEFT).str_pad(decbin($f4),8,'0',STR_PAD_LEFT);
	  	$broadcast_bin = str_pad(substr($ip_bin, 0, $binary_netmask),32,'1',STR_PAD_RIGHT);
	  	$broadcast_bin = wordwrap($broadcast_bin, 8, '.', 1);
	  	list($f1,$f2,$f3,$f4) = explode('.', trim($broadcast_bin));
	  	return bindec($f1).'.'.bindec($f2).'.'.bindec($f3).'.'.bindec($f4);
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	}
	
	/**
	 * Get the network address information
	 *
	 */
	function network_info(){
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		$dist = $this->server_conf['dist'];
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	  	ob_start();
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	  	passthru('ifconfig');
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	  	$output = ob_get_contents();
	  	ob_end_clean();
	  	$lines = explode("\n", $output);
	  	foreach($lines as $line){
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		    $elms = explode(' ', $line);
	    	if(trim($elms[0]) != '' && substr($elms[0],0,1) != "\t"){
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	      		$elms[0] = trim($elms[0]);
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	      		if(strstr($dist, 'freebsd')) $elms[0] = substr($elms[0],0,-1);
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	      		$interfaces[] = $elms[0];
	    	}
	  	}
	  	if(!empty($interfaces)){
		    foreach($interfaces as $interface){
	    		ob_start();
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	      		if(!strstr($dist, 'freebsd')){
	        		passthru('ifconfig '.$interface." | grep -iw 'inet' | cut -f2 -d: | cut -f1 -d' '");
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	      		} else {
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	        		passthru('ifconfig '.$interface." | grep -iw 'inet' | grep -iv 'inet6' | cut -f2 -d' '");
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	      		}
	      		$output = trim(ob_get_contents());
	      		ob_end_clean();
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	      		if($output != ''){
	        		$ifconfig['INTERFACE'][$interface] = $output;
	        		$ifconfig['IP'][$output] = $interface;
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	      		}
	    	}
	    	if(!empty($ifconfig)){
	      		return $ifconfig;
	    	} else {
	      		return false;
	    	}
	  	} else {
	    	return false;
	  	}
	}
	
	/**
	 * Configure the network settings from the system
	 *
	 */
	function network_config(){
		$ifconfig = $this->network_info();
	  	if($ifconfig){
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	    	$main_interface = $ifconfig['IP'][$this->server_conf['server_ip']];
	    	if(strstr($main_interface, ':')){
	      		$parts = explode(':', $main_interface);
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	      		$main_interface = trim($parts[0]);
	    	}
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	    	if($main_interface != ''){
	      		$ips = $this->data['isp_server_ip'];
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	      		if(!empty($ips)){
	        		foreach($ips as $ip){
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	          			if(!isset($ifconfig['IP'][$ip['server_ip']])){
	            			$to_set[] = $ip['server_ip'];
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	          			} else {
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	            			unset($ifconfig['IP'][$ip['server_ip']]);
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	          			}
	        		}
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	        		if(!empty($ifconfig['IP'])){
	          			foreach($ifconfig['IP'] as $key => $val){
	            			if(!strstr($val, 'lo') && !strstr($val, 'lp') && strstr($val, $main_interface)){
	              				exec('ifconfig '.$val.' down &> /dev/null');
	              				unset($ifconfig['INTERFACE'][$val]);
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	            			}
	          			}
	        		}
	        		if(!empty($to_set)){
	         			foreach($to_set as $to){
	           				$i = 0;
	           				while($i >= 0){
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	             				if(isset($ifconfig['INTERFACE'][$main_interface.':'.$i])){
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	               					$i++;
					             } else {
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	               					$new_interface = $main_interface.':'.$i;
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	               					$i = -1;
	             				}
	           				}
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	           				exec('ifconfig '.$new_interface.' '.$to.' netmask '.$this->server_conf['server_netzmaske'].' up &> /dev/null');
	           				$ifconfig['INTERFACE'][$new_interface] = $to;
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	          			}
	        		}
	      		}
	    	}
	  	}
	}
	
	function quota_dirs(){
	  global $app;
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	  $content = $app->file->unix_nl($app->file->no_comments('/etc/fstab'));
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	  $lines = explode("\n", $content);
	  foreach($lines as $line){
	    $line = trim($line);
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	    if($line != ''){
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	      $elms = explode("\t", $line);
	      foreach($elms as $elm){
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	        if(trim($elm) != '') $f[] = $elm;
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	      }
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	      if(!empty($f) && stristr($f[3], 'userquota') && stristr($f[3], 'groupquota')){
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	        $q_dirs[] = trim($f[1]);
	      }
	      unset($f);
	    }
	  }
	  if(!empty($q_dirs)){
	    return $q_dirs;
	  } else {
	    return false;
	  }
	}
	
	/**
	 * Scan the trash for virusses infection
	 *
	 */
	function make_trashscan(){
		global $app;
	  	//trashscan erstellen
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	  	// Template Öffnen
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	  	$app->tpl->clear_all();
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	  	$app->tpl->define( array(table    => 'trashscan.master'));
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	  	if(!isset($this->server_conf['virusadmin']) || trim($this->server_conf['virusadmin']) == '') $this->server_conf['virusadmin'] = 'admispconfig@localhost';
	  	if(substr($this->server_conf['virusadmin'],0,1) == '#'){
		    $notify = 'no';
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	  	} else {
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		    $notify = 'yes';
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	  	}
	
	  	// Variablen zuweisen
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	  	$app->tpl->assign( array(VIRUSADMIN => $this->server_conf['virusadmin'],
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	                           NOTIFICATION => $notify));
	
	  	$app->tpl->parse(TABLE, table);
	
	  	$trashscan_text = $app->tpl->fetch();
	
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	  	$datei = '/home/admispconfig/ispconfig/tools/clamav/bin/trashscan';
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	  	$app->file->wf($datei, $trashscan_text);
	
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	  	chmod($datei, 0755);
	  	chown($datei,'admispconfig');
	  	chgrp($datei,'admispconfig');
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	}
	
	/**
	 * Get the current time
	 *
	 */
	function get_time(){
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	  $addr = 'http://www.ispconfig.org/';
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	  $timeout = 1;
	  $url_parts = parse_url($addr);
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	  $path = $url_parts['path'];
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	  $port = 80;
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	  $urlHandle = @fsockopen($url_parts['host'], $port, $errno, $errstr, $timeout);
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	  if ($urlHandle){
	    socket_set_timeout($urlHandle, $timeout);
	
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	    $urlString = 'GET '.$path." HTTP/1.0\r\nHost: ".$url_parts['host']."\r\nConnection: Keep-Alive\r\nUser-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)\r\n";
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	    if ($user) $urlString .= 'Authorization: Basic '.base64_encode($user.':'.$pass)."\r\n";
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	    $urlString .= "\r\n";
	    fputs($urlHandle, $urlString);
	
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	    $month['Jan'] = '01';
	    $month['Feb'] = '02';
	    $month['Mar'] = '03';
	    $month['Apr'] = '04';
	    $month['May'] = '05';
	    $month['Jun'] = '06';
	    $month['Jul'] = '07';
	    $month['Aug'] = '08';
	    $month['Sep'] = '09';
	    $month['Oct'] = '10';
	    $month['Nov'] = '11';
	    $month['Dec'] = '12';
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	    $c = 0;
	    $l = 0;
	    $startzeit = time();
	    while(!feof($urlHandle) && $c < 2 && $l == 0){
	      $line = trim(fgets($urlHandle,128));
	      $response .= $line;
	      $c = time() - $startzeit;
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	      if($line == '' || substr($line, 0, 5) == 'Date:') $l += 1; // nur den Header auslesen
	      if(substr($line, 0, 5) == 'Date:'){
	        $parts = explode(' ', $line);
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	        $tag = $parts[2];
	        $monat = $month[$parts[3]];
	        $jahr = $parts[4];
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	        list($stunde, $minute, $sekunde) = explode(':', $parts[5]);
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	        $timestamp = mktime($stunde,$minute,$sekunde,$monat,$tag,$jahr);
	      }
	    }
	
	    @fclose($urlHandle);
	
	    return $timestamp;
	  } else {
	    @fclose($urlHandle);
	    return false;
	  }
	}
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	function replaceLine($filename,$search_pattern,$new_line,$strict = 0,$append = 1) {
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		global $app;
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		if($this->checkpath($filename) == false) {
			$app->log("Action aborted, file is a symlink: $filename",LOGLEVEL_WARN);
			return false;
		}
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		$lines = @file($filename);
		$out = '';
		$found = 0;
		if(is_array($lines)) {
			foreach($lines as $line) {
				if($strict == 0) {
					if(stristr($line,$search_pattern)) {
						$out .= $new_line."\n";
						$found = 1;
					} else {
						$out .= $line;
					}
				} else {
					if(trim($line) == $search_pattern) {
						$out .= $new_line."\n";
						$found = 1;
					} else {
						$out .= $line;
					}
				}
			}
		}
		
		if($found == 0) {
			//* add \n if the last line does not end with \n or \r
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			if(substr($out,-1) != "\n" && substr($out,-1) != "\r" && filesize($filename) > 0) $out .= "\n";
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			//* add the new line at the end of the file
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			if($append == 1) {
				$out .= $new_line."\n";
			}
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		}
		file_put_contents($filename,$out);
	}
	
	function removeLine($filename,$search_pattern,$strict = 0) {
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	global $app;
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	if($this->checkpath($filename) == false) {
		$app->log("Action aborted, file is a symlink: $filename",LOGLEVEL_WARN);
		return false;
	}
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	if($lines = @file($filename)) {
		$out = '';
		foreach($lines as $line) {
			if($strict == 0) {
				if(!stristr($line,$search_pattern)) {
					$out .= $line;
				}
			} else {
				if(!trim($line) == $search_pattern) {
					$out .= $line;
				}
			}
		}
		file_put_contents($filename,$out);
	}
	}
	
	function maildirmake($maildir_path, $user = '', $subfolder = '') {
		
		global $app;
		
		if($subfolder != '') {
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			$dir = escapeshellcmd($maildir_path.'/.'.$subfolder);
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		} else {
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			$dir = escapeshellcmd($maildir_path);
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		}
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		if(!is_dir($dir)) mkdir($dir, 0700, true);
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		if($user != '' && $user != 'root' && $this->is_user($user)) {
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			$user = escapeshellcmd($user);
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			// I assume that the name of the (vmail group) is the same as the name of the mail user in ISPConfig 3
			$group = $user;
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			if(is_dir($dir)) $this->chown($dir,$user);
			if(is_dir($dir)) $this->chgrp($dir,$group);
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			$chown_mdsub = true;
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		}
		
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		$maildirsubs = array('cur','new','tmp');

		foreach ($maildirsubs as $mdsub) {
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			if(!is_dir($dir.'/'.$mdsub)) mkdir($dir.'/'.$mdsub, 0700, true);
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			if ($chown_mdsub) {
				chown($dir.'/'.$mdsub, $user);
				chgrp($dir.'/'.$mdsub, $group);
			}
		}

		chmod($dir, 0700);
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		/*
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		if($user != '' && $this->is_user($user) && $user != 'root') {
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			$user = escapeshellcmd($user);
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			// I assume that the name of the (vmail group) is the same as the name of the mail user in ISPConfig 3
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			$group = $user;
			exec("chown $user:$group $dir $dir_cur $dir_new $dir_tmp");
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		}
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		*/
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		//* Add the subfolder to the subscriptions and courierimapsubscribed files
		if($subfolder != '') {
			// Courier
			if(!is_file($maildir_path.'/courierimapsubscribed')) {
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				$tmp_file = escapeshellcmd($maildir_path.'/courierimapsubscribed');
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				touch($tmp_file);
				chmod($tmp_file, 0744);
				chown($tmp_file,'vmail');
				chgrp($tmp_file,'vmail');
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			}
			$this->replaceLine($maildir_path.'/courierimapsubscribed','INBOX.'.$subfolder,'INBOX.'.$subfolder,1,1);
			
			// Dovecot
			if(!is_file($maildir_path.'/subscriptions')) {
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				$tmp_file = escapeshellcmd($maildir_path.'/subscriptions');
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				touch($tmp_file);
				chmod($tmp_file, 0744);
				chown($tmp_file,'vmail');
				chgrp($tmp_file,'vmail');
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			}
			$this->replaceLine($maildir_path.'/subscriptions',$subfolder,$subfolder,1,1);
		}
		
		$app->log('Created Maildir '.$maildir_path.' with subfolder: '.$subfolder,LOGLEVEL_DEBUG);
		
	}
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