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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(){
		global $go_info;
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	  	$this->server_id = $go_info['isp']['server_id'];
	  	$this->server_conf = $go_info['isp']['server_conf'];
	  	$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;
	  	}
	}
	
	/**
	 * Get all information from a user
	 *
	 */
	function get_user_attributes($user){
		global $app;
	  	if($this->is_user($user)){
584
	    	$user_datei = $this->server_conf['passwd_datei'];
585 586 587 588
	    	$users = $app->file->no_comments($user_datei);
	    	$lines = explode("\n", $users);
	    	if(is_array($lines)){
	      		foreach($lines as $line){
589 590
	        		if(trim($line) != ''){
	          			list($f1, $f2, $f3, $f4, $f5, $f6, $f7) = explode(':', $line);
591
	          			if($f1 == $user){
592 593 594 595 596 597 598
	            			$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;
599 600 601 602 603 604 605 606 607 608 609 610 611 612
	            			return $user_attr;
	          			}
	        		}
	      		}
	    	}
	  	} else {
	    	return false;
	  	}
	}
	
	/**
	 * Edit the owner of a file
	 *
	 */
613
	function chown($file, $owner, $allow_symlink = false){
614
	  global $app;
615 616 617
	  if($allow_symlink == false && $this->checkpath($file) == false) {
		$app->log("Action aborted, file is a symlink: $file",LOGLEVEL_WARN);
		return false;
618
	  }
619
	  if(file_exists($file)) {
620 621 622 623 624 625
		if(@chown($file, $owner)) {
			return true;
		} else {
			$app->log("chown failed: $file : $owner",LOGLEVEL_DEBUG);
			return false;
		}
626
	  }
627 628 629
	}
	
	function chgrp($file, $group = '', $allow_symlink = false){
630
	  global $app;
631 632 633
	  if($allow_symlink == false && $this->checkpath($file) == false) {
		$app->log("Action aborted, file is a symlink: $file",LOGLEVEL_WARN);
		return false;
634
	  }
635
	  if(file_exists($file)) {
636 637 638 639 640 641
		if(@chgrp($file, $group)) {
			return true;
		} else {
			$app->log("chgrp failed: $file : $group",LOGLEVEL_DEBUG);
			return false;
		}
642
	  }
643 644 645 646
	}
	
	//* Change the mode of a file
	function chmod($file, $mode, $allow_symlink = false) {
647
		global $app;
648 649 650 651
		if($allow_symlink == false && $this->checkpath($file) == false) {
			$app->log("Action aborted, file is a symlink: $file",LOGLEVEL_WARN);
			return false;
		}
652 653 654 655 656 657
		if(@chmod($file, $mode)) {
			return true;
		} else {
			$app->log("chmod failed: $file : $mode",LOGLEVEL_DEBUG);
			return false;
		}
658 659 660
	}
	
	function file_put_contents($filename, $data, $allow_symlink = false) {
661
		global $app;
662 663 664 665
		if($allow_symlink == false && $this->checkpath($filename) == false) {
			$app->log("Action aborted, file is a symlink: $filename",LOGLEVEL_WARN);
			return false;
		}
666
		if(file_exists($filename)) unlink($filename);
667 668 669 670
		return file_put_contents($filename, $data);
	}
	
	function file_get_contents($filename, $allow_symlink = false) {
671
		global $app;
672 673 674 675 676 677 678 679
		if($allow_symlink == false && $this->checkpath($filename) == false) {
			$app->log("Action aborted, file is a symlink: $filename",LOGLEVEL_WARN);
			return false;
		}
		return file_put_contents($filename, $data);
	}
	
	function rename($filename, $new_filename, $allow_symlink = false) {
680
		global $app;
681 682 683 684 685 686 687 688
		if($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) {
689
		global $app;
690 691 692 693
		if($allow_symlink == false && $this->checkpath($dirname) == false) {
			$app->log("Action aborted, file is a symlink: $dirname",LOGLEVEL_WARN);
			return false;
		}
694 695 696 697 698 699
		if(@mkdir($dirname)) {
			return true;
		} else {
			$app->log("mkdir failed: $dirname",LOGLEVEL_DEBUG);
			return false;
		}
700 701 702
	}
	
	function unlink($file) {
703 704 705
		if(file_exists($filename)) {
			return unlink($filename);
		}
706 707 708 709 710 711 712 713 714 715 716 717 718 719 720
	}
	
	function copy($file1,$file2) {
		return copy($file1,$file2);
	}
	
	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
		if(!preg_match('/[a-zA-Z0-9_\.\-]{1,}/',$path)) return false;
		
		//* Check path for symlinks
721
		$path_parts = explode('/',$path);
722 723 724 725 726 727 728
		$testpath = '';
		foreach($path_parts as $p) {
			$testpath .= '/'.$p;
			if(is_link($testpath)) return false;
		}
		
		return true;
729 730 731 732 733 734 735 736
	}
	
	/**
	 * Add an user to a specific group
	 *
	 */
	function add_user_to_group($group, $user = 'admispconfig'){
		global $app;
737
	  	$group_file = $app->file->rf($this->server_conf['group_datei']);
738 739
	  	$group_file_lines = explode("\n", $group_file);
	  	foreach($group_file_lines as $group_file_line){
740
		    list($group_name,$group_x,$group_id,$group_users) = explode(':',$group_file_line);
741
	    	if($group_name == $group){
742
	      		$group_users = explode(',', str_replace(' ', '', $group_users));
743 744 745
	      		if(!in_array($user, $group_users)){
	        		$group_users[] = $user;
	      		}
746 747 748
	      		$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;
749 750 751 752
	    	}
	    	$new_group_file[] = $group_file_line;
	  	}
	  	$new_group_file = implode("\n", $new_group_file);
753 754 755 756
	  	$app->file->wf($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__);
757 758 759
	  	}
	}
	
760
	/*
761 762 763
	function usermod($user, $groups){
		global $app;
	  	if($this->is_user($user)){
764 765
		    $groups = explode(',', str_replace(' ', '', $groups));
	    	$group_file = $app->file->rf($this->server_conf['group_datei']);
766 767 768
	    	$group_file_lines = explode("\n", $group_file);
	    	foreach($group_file_lines as $group_file_line){
	      		if(trim($group_file_line) != ""){
769 770
	        		list($f1, $f2, $f3, $f4) = explode(':', $group_file_line);
	        		$group_users = explode(',', str_replace(' ', '', $f4));
771 772 773 774 775 776
	        		if(!in_array($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;
	            			}
777
	            			$f4 = implode(',', $g_users);
778 779 780
	          			}
		        	} else {
	          			if(!in_array($user, $group_users)){
781
	            			if(trim($group_users[0]) == '') unset($group_users);
782 783
	            			$group_users[] = $user;
	          			}
784
	          			$f4 = implode(',', $group_users);
785
	        		}
786
	        		$new_group_file[] = $f1.':'.$f2.':'.$f3.':'.$f4;
787 788 789
	      		}
	    	}
	    	$new_group_file = implode("\n", $new_group_file);
790 791 792 793
	    	$app->file->wf($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__);
794 795 796 797 798 799
	    	}
	    	return true;
	  	} else {
		    return false;
	  	}
	}
800
	*/
801 802 803 804 805 806 807
	
	/**boot autostart etc
	 *
	 */
	function rc_edit($service, $rl, $action){
		// $action = "on|off";
	  	global $app;
808 809 810 811 812 813
	  	$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');
814
	    	}
815 816 817
	    	if($action == 'off'){
	      		if(is_link($dist_init_scripts.'/'.$service.'.sh')){
	        		unlink($dist_init_scripts.'/'.$service.'.sh');
818
	      		} else {
819
	        		rename($dist_init_scripts.'/'.$service.'.sh',$dist_init_scripts.'/'.$service);
820 821 822 823
	      		}
	    	}
	  	} else { // Linux
	    	if(substr($dist, 0,4) == 'suse'){
824
	      		if($action == 'on'){
825 826
	        		exec("chkconfig --add $service &> /dev/null");
	      		}
827
	      		if($action == 'off'){
828 829 830
	        		exec("chkconfig --del $service &> /dev/null");
	      		}
	    	} else {
831
	      		$runlevels = explode(',', $rl);
832 833
	      		foreach($runlevels as $runlevel){
	        		$runlevel = trim($runlevel);
834 835
	        		if($runlevel != '' && is_dir($dist_runlevel.'/rc'.$runlevel.'.d')){
	          			$handle=opendir($dist_runlevel.'/rc'.$runlevel.'.d');
836
	          			while($file = readdir($handle)){
837 838 839
	            			if($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/'.$file;
840 841 842 843
	            			}
	          			}
	          			closedir($handle);
	        		}
844 845
	        		if($action == 'on'){
	          			if(!is_array($ln_arr[$runlevel])) @symlink($dist_init_scripts.'/'.$service, $dist_runlevel.'/rc'.$runlevel.'.d/S99'.$service);
846
	        		}
847
	        		if($action == 'off'){
848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946
	          			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;
947 948 949
	  	$dist = $this->server_conf['dist'];
	  	$dist_init_scripts = $this->server_conf['dist_init_scripts'];
	  	if(!strstr($dist, 'freebsd')){
950 951
		    $app->log->caselog("$dist_init_scripts/$daemon $action &> /dev/null", $this->FILE, __LINE__);
	  	} else {
952 953 954
		    if(is_file($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__);
955
	      		} else {
956
	        		$app->log->caselog($dist_init_scripts.'/'.$daemon.'.sh stop &> /dev/null', $this->FILE, __LINE__);
957
	        		sleep(3);
958
	        		$app->log->caselog($dist_init_scripts.'/'.$daemon.'.sh start &> /dev/null', $this->FILE, __LINE__);
959 960
	      		}
	    	} else {
961 962 963
	      		if(is_file($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__);
964
	        		} else {
965
	          			$app->log->caselog($dist_init_scripts.'/'.$daemon.' stop &> /dev/null', $this->FILE, __LINE__);
966
	          			sleep(3);
967
	          			$app->log->caselog($dist_init_scripts.'/'.$daemon.' start &> /dev/null', $this->FILE, __LINE__);
968 969
	        		}
	      		} else {
970 971 972
	        		if(is_file('/etc/rc.d/'.$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__);
973
	          			} else {
974
	            			$app->log->caselog('/etc/rc.d/'.$daemon.' stop &> /dev/null', $this->FILE, __LINE__);
975
	            			sleep(3);
976
	            			$app->log->caselog('/etc/rc.d/'.$daemon.' start &> /dev/null', $this->FILE, __LINE__);
977 978 979 980 981 982 983 984
	          			}
	        		}
		      	}
	    	}
	  	}
	}
	
	function netmask($netmask){
985 986 987 988 989 990 991
	  list($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);
992 993 994
	}
	
	function binary_netmask($netmask){
995 996 997 998
	  list($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');
999 1000 1001 1002
	}
	
	function network($ip, $netmask){
	  $netmask = $this->netmask($netmask);
1003 1004 1005 1006
	  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($f4),8,'0',STR_PAD_LEFT);
1007 1008 1009
	  for($i=0;$i<32;$i++){
	    $network_bin .= substr($netmask_bin,$i,1) * substr($ip_bin,$i,1);
	  }
1010 1011 1012
	  $network_bin = wordwrap($network_bin, 8, '.', 1);
	  list($f1,$f2,$f3,$f4) = explode('.', trim($network_bin));
	  return bindec($f1).'.'.bindec($f2).'.'.bindec($f3).'.'.bindec($f4);
1013 1014 1015 1016 1017 1018 1019 1020 1021
	}
	
	/**
	 * 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);
1022 1023 1024 1025 1026 1027
	  	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);
1028 1029 1030 1031 1032 1033 1034
	}
	
	/**
	 * Get the network address information
	 *
	 */
	function network_info(){
1035
		$dist = $this->server_conf['dist'];
1036
	  	ob_start();
1037
	  	passthru('ifconfig');
1038 1039 1040 1041
	  	$output = ob_get_contents();
	  	ob_end_clean();
	  	$lines = explode("\n", $output);
	  	foreach($lines as $line){
1042 1043
		    $elms = explode(' ', $line);
	    	if(trim($elms[0]) != '' && substr($elms[0],0,1) != "\t"){
1044
	      		$elms[0] = trim($elms[0]);
1045
	      		if(strstr($dist, 'freebsd')) $elms[0] = substr($elms[0],0,-1);
1046 1047 1048 1049 1050 1051
	      		$interfaces[] = $elms[0];
	    	}
	  	}
	  	if(!empty($interfaces)){
		    foreach($interfaces as $interface){
	    		ob_start();
1052 1053
	      		if(!strstr($dist, 'freebsd')){
	        		passthru('ifconfig '.$interface." | grep -iw 'inet' | cut -f2 -d: | cut -f1 -d' '");
1054
	      		} else {
1055
	        		passthru('ifconfig '.$interface." | grep -iw 'inet' | grep -iv 'inet6' | cut -f2 -d' '");
1056 1057 1058
	      		}
	      		$output = trim(ob_get_contents());
	      		ob_end_clean();
1059 1060 1061
	      		if($output != ''){
	        		$ifconfig['INTERFACE'][$interface] = $output;
	        		$ifconfig['IP'][$output] = $interface;
1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080
	      		}
	    	}
	    	if(!empty($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){
1081 1082 1083
	    	$main_interface = $ifconfig['IP'][$this->server_conf['server_ip']];
	    	if(strstr($main_interface, ':')){
	      		$parts = explode(':', $main_interface);
1084 1085
	      		$main_interface = trim($parts[0]);
	    	}
1086 1087
	    	if($main_interface != ''){
	      		$ips = $this->data['isp_server_ip'];
1088 1089
	      		if(!empty($ips)){
	        		foreach($ips as $ip){
1090 1091
	          			if(!isset($ifconfig['IP'][$ip['server_ip']])){
	            			$to_set[] = $ip['server_ip'];
1092
	          			} else {
1093
	            			unset($ifconfig['IP'][$ip['server_ip']]);
1094 1095
	          			}
	        		}
1096 1097 1098 1099 1100
	        		if(!empty($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]);
1101 1102 1103 1104 1105 1106 1107
	            			}
	          			}
	        		}
	        		if(!empty($to_set)){
	         			foreach($to_set as $to){
	           				$i = 0;
	           				while($i >= 0){
1108
	             				if(isset($ifconfig['INTERFACE'][$main_interface.':'.$i])){
1109 1110
	               					$i++;
					             } else {
1111
	               					$new_interface = $main_interface.':'.$i;
1112 1113 1114
	               					$i = -1;
	             				}
	           				}
1115 1116
	           				exec('ifconfig '.$new_interface.' '.$to.' netmask '.$this->server_conf['server_netzmaske'].' up &> /dev/null');
	           				$ifconfig['INTERFACE'][$new_interface] = $to;
1117 1118 1119 1120 1121 1122 1123 1124 1125
	          			}
	        		}
	      		}
	    	}
	  	}
	}
	
	function quota_dirs(){
	  global $app;
1126
	  $content = $app->file->unix_nl($app->file->no_comments('/etc/fstab'));
1127 1128 1129
	  $lines = explode("\n", $content);
	  foreach($lines as $line){
	    $line = trim($line);
1130
	    if($line != ''){
1131 1132
	      $elms = explode("\t", $line);
	      foreach($elms as $elm){
1133
	        if(trim($elm) != '') $f[] = $elm;
1134
	      }
1135
	      if(!empty($f) && stristr($f[3], 'userquota') && stristr($f[3], 'groupquota')){
1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156
	        $q_dirs[] = trim($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
	  	// Template ffnen
	  	$app->tpl->clear_all();
1157
	  	$app->tpl->define( array(table    => 'trashscan.master'));
1158
	
1159 1160 1161
	  	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';
1162
	  	} else {
1163
		    $notify = 'yes';
1164 1165 1166
	  	}
	
	  	// Variablen zuweisen
1167
	  	$app->tpl->assign( array(VIRUSADMIN => $this->server_conf['virusadmin'],
1168 1169 1170