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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{
var $FILE = '/root/ispconfig/scripts/lib/classes/ispconfig_system.lib.php';
var $server_id;
var $server_conf;
var $data;
/**
* Construct for this class
*
* @return system
*/
public function system(){
//global $go_info;
//$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';
/**
* Get the hostname from the server
*
* @return string
*/
public function hostname(){
$dist = $this->server_conf['dist'];
ob_start();
passthru('hostname');
$hostname = ob_get_contents();
ob_end_clean();
$hostname = trim($hostname);
ob_start();
if(!strstr($dist, 'freebsd')){
passthru('dnsdomainname');
} else {
passthru('domainname');
}
$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) != '') {
$user_datei = $this->server_conf['passwd_datei'];
$shadow_datei = $this->server_conf['shadow_datei'];
$shell = realpath($shell);
if(trim($passwort) == '') $passwort = '*';
$new_user = "\n$user_username:x:$uid:$gid:$username:$homedir:$shell\n";
$app->log->msg('USER: '.$new_user);
$app->file->af($user_datei, $new_user);
if($shadow_datei == '/etc/shadow'){
$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
//$this->order_users_groups();
if($shadow_datei != '/etc/shadow'){
$app->file->af($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);
$uid = $user_attr['uid'];
$gid = $user_attr['gid'];
$username = $user_attr['name'];
$homedir = $user_attr['homedir'];
$shell = '/dev/null';
$this->deluser($user_username);
$this->adduser($user_username, $uid, $gid, $username, $homedir, $shell, $passwort);
/**
* Delete a user from the system
*
*/
function deluser($user_username){
global $app;
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if($this->is_user($user_username)){
$user_datei = $this->server_conf['passwd_datei'];
$shadow_datei = $this->server_conf['shadow_datei'];
$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++){
if(trim($lines[$i]) != ''){
list($f1, ) = explode(':', $lines[$i]);
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++){
if(trim($lines[$i]) != ''){
list($f1, ) = explode(':', $lines[$i]);
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);
$group_file = $app->file->rf($this->server_conf['group_datei']);
$group_file_lines = explode("\n", $group_file);
foreach($group_file_lines as $group_file_line){
if(trim($group_file_line) != ''){
list($f1, $f2, $f3, $f4) = explode(':', $group_file_line);
$group_users = explode(',', str_replace(' ', '', $f4));
if(in_array($user_username, $group_users)){
$g_users = array();
foreach($group_users as $group_user){
if($group_user != $user_username) $g_users[] = $group_user;
}
$f4 = implode(',', $g_users);
}
$new_group_file[] = $f1.':'.$f2.':'.$f3.':'.$f4;
}
}
$new_group_file = implode("\n", $new_group_file);
$app->file->wf($this->server_conf['group_datei'], $new_group_file);
// TB: auskommentiert
//$this->order_users_groups();
if($shadow_datei != '/etc/shadow'){
$app->file->af($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 {
$group_datei = $this->server_conf['group_datei'];
$shadow_datei = $this->server_conf['shadow_datei'];
$new_group = "\n$group:x:$gid:$members\n";
$app->file->af($group_datei, $new_group);
// TB: auskommentiert
//$this->order_users_groups();
if($shadow_datei != '/etc/shadow'){
$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 $app;
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if($this->is_group($group)){
$group_datei = $this->server_conf['group_datei'];
$shadow_datei = $this->server_conf['shadow_datei'];
$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++){
if(trim($lines[$i]) != ''){
list($f1, ) = explode(':', $lines[$i]);
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
//$this->order_users_groups();
if($shadow_datei != '/etc/shadow'){
$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'];
$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);
$arr[$f3] = $line;
}
}
}
ksort($arr);
reset($arr);
if($shadow_datei != '/etc/shadow'){
$app->file->wf($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) != ""){
list($f1, $f2, $f3, ) = explode(':', $line);
if($f1 != 'toor'){
$arr[$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 $line){
if(trim($line) != ''){
list($f1, $f2, $f3, ) = explode(':', $line);
if($f1 != 'toor'){
$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 $app;
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if($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;
}
$user_datei = $this->server_conf['passwd_datei'];
$group_datei = $this->server_conf['group_datei'];
$users = $app->file->no_comments($user_datei);
$lines = explode("\n", $users);
if(is_array($lines)){
foreach($lines as $line){
if(trim($line) != ''){
list($f1, $f2, $f3, $f4, $f5, $f6, $f7) = explode(':', $line);
if($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 $line){
if(trim($line) != ''){
list($f1, $f2, $f3, $f4) = explode(':', $line);
if($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;
$user_datei = $this->server_conf['passwd_datei'];
$users = $app->file->no_comments($user_datei);
$lines = explode("\n", $users);
if(is_array($lines)){
foreach($lines as $line){
if(trim($line) != ''){
list($f1, $f2, $f3, $f4, $f5, $f6, $f7) = explode(':', $line);
if($f1 == $user) return true;
}
}
}
return false;
/**
* Check if the group is on this system
*
*/
function is_group($group){
global $app;
$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 == $group) return true;
}
}
}
return false;
/*
// Alternative implementation of the is_group function. Should be faster then the old one To be tested.
function is_group($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;
}
*/
function root_group(){
global $app;
$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(':', $line);
if($f3 == 0) return $f1;
}
}
}
return false;
/**
* Get the groups of an user
*
*/
function get_user_groups($username){
global $app;
$user_groups = array();
$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(':', $line);
if(intval($f3) < intval($this->server_conf['groupid_von']) && trim($f1) != 'users'){
$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)){
$shadow_datei = $this->server_conf['shadow_datei'];
$passwds = $app->file->no_comments($shadow_datei);
$lines = explode("\n", $passwds);
if(is_array($lines)){
foreach($lines as $line){
if(trim($line) != ''){
list($f1, $f2, ) = explode(':', $line);
if($f1 == $user) return $f2;
}
}
}
} else {
return false;
}
/**
* Get the user from an user id
*
*/
function getuser($uid){
global $app;
$user_datei = $this->server_conf['passwd_datei'];
$users = $app->file->no_comments($user_datei);
$lines = explode("\n", $users);
if(is_array($lines)){
foreach($lines as $line){
if(trim($line) != ''){
list($f1, $f2, $f3,) = explode(':', $line);
if($f3 == $uid) return $f1;
}
}
}
return false;
}
/**
* Get the user id from an user
*
*/
function getuid($user){
global $app;
if($this->is_user($user)){
$user_datei = $this->server_conf['passwd_datei'];
$users = $app->file->no_comments($user_datei);
$lines = explode("\n", $users);
if(is_array($lines)){
foreach($lines as $line){
if(trim($line) != ''){
list($f1, $f2, $f3, ) = explode(':', $line);
if($f1 == $user) return $f3;
}
}
}
} else {
return false;
}
/**
* Get the group from a group id
*
*/
function getgroup($gid){
global $app;
$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(':', $line);
if($f3 == $gid) return $f1;
}
}
}
return false;
}
/**
* Get the group id from an group
*
*/
function getgid($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)){
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);
}
/**
* Get all information from a user
*
*/
function get_user_attributes($user){
global $app;
if($this->is_user($user)){
$user_datei = $this->server_conf['passwd_datei'];
$users = $app->file->no_comments($user_datei);
$lines = explode("\n", $users);
if(is_array($lines)){
foreach($lines as $line){
if(trim($line) != ''){
list($f1, $f2, $f3, $f4, $f5, $f6, $f7) = explode(':', $line);
if($f1 == $user){
$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;
return $user_attr;
}
}
}
}
} else {
return false;
}
/**
* Edit the owner of a file
*
*/
function chown($file, $owner, $allow_symlink = false){
global $app;
if($allow_symlink == false && $this->checkpath($file) == false) {
$app->log("Action aborted, file is a symlink: $file", LOGLEVEL_WARN);
return false;
}
if(file_exists($file)) {
if(@chown($file, $owner)) {
return true;
} else {
$app->log("chown failed: $file : $owner", LOGLEVEL_DEBUG);
return false;
}
}
}
function chgrp($file, $group = '', $allow_symlink = false){
global $app;
if($allow_symlink == false && $this->checkpath($file) == false) {
$app->log("Action aborted, file is a symlink: $file", LOGLEVEL_WARN);
return false;
}
if(file_exists($file)) {
if(@chgrp($file, $group)) {
return true;
} else {
$app->log("chgrp failed: $file : $group", LOGLEVEL_DEBUG);
return false;
}
}
}
//* Change the mode of a file
function chmod($file, $mode, $allow_symlink = false) {
if($allow_symlink == false && $this->checkpath($file) == false) {
$app->log("Action aborted, file is a symlink: $file", LOGLEVEL_WARN);
return false;
}
if(@chmod($file, $mode)) {
return true;
} else {
$app->log("chmod failed: $file : $mode", LOGLEVEL_DEBUG);
return false;
}
}
function file_put_contents($filename, $data, $allow_symlink = false) {
if($allow_symlink == false && $this->checkpath($filename) == false) {
$app->log("Action aborted, file is a symlink: $filename", LOGLEVEL_WARN);
return false;
}
if(file_exists($filename)) unlink($filename);
return file_put_contents($filename, $data);
}
function file_get_contents($filename, $allow_symlink = false) {
if($allow_symlink == false && $this->checkpath($filename) == false) {
$app->log("Action aborted, file is a symlink: $filename", LOGLEVEL_WARN);
return false;
}
return file_get_contents($filename, $data);
}
function rename($filename, $new_filename, $allow_symlink = false) {
if($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, $allow_symlink = false) {
if($allow_symlink == false && $this->checkpath($dirname) == false) {
$app->log("Action aborted, file is a symlink: $dirname", LOGLEVEL_WARN);
return false;
}
if(@mkdir($dirname)) {
return true;
} else {
$app->log("mkdir failed: $dirname", LOGLEVEL_DEBUG);
return false;
}
}
function unlink($filename) {
if(file_exists($filename) || is_link($filename)) {
return unlink($filename);
}
}
function copy($file1, $file2) {
return copy($file1, $file2);
}
function touch($file, $allow_symlink = false){
global $app;
if($allow_symlink == false && @file_exists($file) && $this->checkpath($file) == false) {
$this->unlink($file);
}
if(@touch($file)) {
} else {
$app->log("touch failed: $file", LOGLEVEL_DEBUG);
function checkpath($path) {
$path = trim($path);
//* We allow only absolute paths
if(substr($path, 0, 1) != '/') return false;
//* We allow only some characters in the path
// * is allowed, for example it is part of wildcard certificates/keys: *.example.com.crt
if(!preg_match('@^/[-a-zA-Z0-9_/.*]{1,}[~]?$@', $path)) return false;
//* Check path for symlinks
$path_parts = explode('/', $path);
$testpath = '';
foreach($path_parts as $p) {
$testpath .= '/'.$p;
if(is_link($testpath)) return false;
}
return true;
/**
* This function checks the free space for a given directory
* @param path check path
* @param limit min. free space in bytes
* @return bool - true when the the free space is above limit ohterwise false, opt. available disk-space
function check_free_space($path, $limit = 0, &$free_space = 0) {
$path = rtrim($path, '/');
/**
* Make sure that we have only existing directories in the path.
* Given a file name instead of a directory, the behaviour of the disk_free_space
function is unspecified and may differ between operating systems and PHP versions.
*/
while(!is_dir($path) && $path != '/') $path = realpath(dirname($path));
if (!$free_space) {
$free_space = 0;
return false;
}
return true;
} else {
return false;
}
}
/**
* Add an user to a specific group
*
*/
function add_user_to_group($group, $user = 'admispconfig'){
global $app;
$group_file = $app->file->rf($this->server_conf['group_datei']);
$group_file_lines = explode("\n", $group_file);
foreach($group_file_lines as $group_file_line){
list($group_name, $group_x, $group_id, $group_users) = explode(':', $group_file_line);
if($group_name == $group){
$group_users = explode(',', str_replace(' ', '', $group_users));
if(!in_array($user, $group_users)){
$group_users[] = $user;
}
$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;
}
$new_group_file[] = $group_file_line;
}
$new_group_file = implode("\n", $new_group_file);
$app->file->wf($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', $this->FILE, __LINE__);
}
function usermod($user, $groups){
global $app;
if($this->is_user($user)){
$groups = explode(',', str_replace(' ', '', $groups));
$group_file = $app->file->rf($this->server_conf['group_datei']);
$group_file_lines = explode("\n", $group_file);
foreach($group_file_lines as $group_file_line){
if(trim($group_file_line) != ""){
list($f1, $f2, $f3, $f4) = explode(':', $group_file_line);
$group_users = explode(',', str_replace(' ', '', $f4));
if(!in_array($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;
}