<?php
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/*
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Copyright (c) 2007, Till Brehm, projektfarm Gmbh
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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* Neither the name of ISPConfig nor the names of its contributors
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may be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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class shelluser_base_plugin {
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var $plugin_name = 'shelluser_base_plugin';
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var $class_name = 'shelluser_base_plugin';
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var $min_uid = 499;
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//* This function is called during ispconfig installation to determine
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// if a symlink shall be created for this plugin.
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function onInstall() {
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global $conf;
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if($conf['services']['web'] == true) {
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return true;
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} else {
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return false;
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}
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}
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/*
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This function is called when the plugin is loaded
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*/
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function onLoad() {
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global $app;
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/*
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Register for the events
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*/
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$app->plugins->registerEvent('shell_user_insert',$this->plugin_name,'insert');
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$app->plugins->registerEvent('shell_user_update',$this->plugin_name,'update');
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$app->plugins->registerEvent('shell_user_delete',$this->plugin_name,'delete');
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}
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function insert($event_name,$data) {
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global $app, $conf;
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$app->uses('system');
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if($app->system->is_user($data['new']['puser'])) {
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// Get the UID of the parent user
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$uid = intval($app->system->getuid($data['new']['puser']));
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if($uid > $this->min_uid) {
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$command = 'useradd';
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$command .= ' -d '.escapeshellcmd($data['new']['dir']);
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$command .= ' -g '.escapeshellcmd($data['new']['pgroup']);
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$command .= ' -o '; // non unique
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if($data['new']['password'] != '') $command .= ' -p '.escapeshellcmd($data['new']['password']);
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$command .= ' -s '.escapeshellcmd($data['new']['shell']);
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$command .= ' -u '.escapeshellcmd($uid);
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$command .= ' '.escapeshellcmd($data['new']['username']);
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exec($command);
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$app->log("Executed command: ".$command,LOGLEVEL_DEBUG);
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$app->log("Added shelluser: ".$data['new']['username'],LOGLEVEL_DEBUG);
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//* Create .bash_history file
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touch(escapeshellcmd($data['new']['dir']).'/.bash_history');
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chmod(escapeshellcmd($data['new']['dir']).'/.bash_history', 0755);
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chown(escapeshellcmd($data['new']['dir']).'/.bash_history', escapeshellcmd($data['new']['username']));
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chgrp(escapeshellcmd($data['new']['dir']).'/.bash_history', escapeshellcmd($data['new']['pgroup']));
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//* Disable shell user temporarily if we use jailkit
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if($data['new']['chroot'] == 'jailkit') {
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$command = 'usermod -s /bin/false -L '.escapeshellcmd($data['new']['username']);
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exec($command);
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$app->log("Disabling shelluser temporarily: ".$command,LOGLEVEL_DEBUG);
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}
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} else {
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$app->log("UID = $uid for shelluser:".$data['new']['username']." not allowed.",LOGLEVEL_ERROR);
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}
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} else {
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$app->log("Skipping insertion of user:".$data['new']['username'].", parent user ".$data['new']['puser']." does not exist.",LOGLEVEL_WARN);
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}
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}
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function update($event_name,$data) {
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global $app, $conf;
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$app->uses('system');
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if($app->system->is_user($data['new']['puser'])) {
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// Get the UID of the parent user
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$uid = intval($app->system->getuid($data['new']['puser']));
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if($uid > $this->min_uid) {
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// Check if the user that we want to update exists, if not, we insert it
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if($app->system->is_user($data['old']['username'])) {
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$command = 'usermod';
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$command .= ' --home '.escapeshellcmd($data['new']['dir']);
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$command .= ' --gid '.escapeshellcmd($data['new']['pgroup']);
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// $command .= ' --non-unique ';
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$command .= ' --password '.escapeshellcmd($data['new']['password']);
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if($data['new']['chroot'] != 'jailkit') $command .= ' --shell '.escapeshellcmd($data['new']['shell']);
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// $command .= ' --uid '.escapeshellcmd($uid);
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$command .= ' --login '.escapeshellcmd($data['new']['username']);
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$command .= ' '.escapeshellcmd($data['old']['username']);
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exec($command);
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$app->log("Executed command: $command ",LOGLEVEL_DEBUG);
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$app->log("Updated shelluser: ".$data['old']['username'],LOGLEVEL_DEBUG);
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//* Create .bash_history file
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if(!is_file($data['new']['dir']).'/.bash_history') {
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touch(escapeshellcmd($data['new']['dir']).'/.bash_history');
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chmod(escapeshellcmd($data['new']['dir']).'/.bash_history', 0755);
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chown(escapeshellcmd($data['new']['dir']).'/.bash_history',escapeshellcmd($data['new']['username']));
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chgrp(escapeshellcmd($data['new']['dir']).'/.bash_history',escapeshellcmd($data['new']['pgroup']));
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}
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} else {
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// The user does not exist, so we insert it now
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$this->insert($event_name,$data);
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}
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} else {
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$app->log("UID = $uid for shelluser:".$data['new']['username']." not allowed.",LOGLEVEL_ERROR);
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}
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} else {
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$app->log("Skipping update for user:".$data['new']['username'].", parent user ".$data['new']['puser']." does not exist.",LOGLEVEL_WARN);
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}
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}
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function delete($event_name,$data) {
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global $app, $conf;
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$app->uses('system');
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if($app->system->is_user($data['old']['username'])) {
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// Get the UID of the user
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$userid = intval($app->system->getuid($data['old']['username']));
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if($userid > $this->min_uid) {
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// We delete only non jailkit users, jailkit users will be deleted by the jailkit plugin.
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if ($data['old']['chroot'] != "jailkit") {
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$command = 'userdel -f';
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$command .= ' '.escapeshellcmd($data['old']['username']);
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exec($command);
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$app->log("Deleted shelluser: ".$data['old']['username'],LOGLEVEL_DEBUG);
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}
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} else {
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$app->log("UID = $userid for shelluser:".$data['old']['username']." not allowed.",LOGLEVEL_ERROR);
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}
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} else {
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$app->log("User:".$data['new']['username']." does not exist in in /etc/passwd, skipping delete.",LOGLEVEL_WARN);
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}
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}
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} // end class
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?>
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