From 28a1b864972e1f93aa57c88c0cce9ea97e61bea2 Mon Sep 17 00:00:00 2001
From: laking <laking@ispconfig3>
Date: Mon, 04 Apr 2011 21:33:44 -0400
Subject: [PATCH] Update on certificte ssh-rsa authentication. Under construction are the shell plugins.
---
server/plugins-available/shelluser_base_plugin.inc.php | 203 ++++++++++++++++++++++++++++++++++++++++----------
1 files changed, 163 insertions(+), 40 deletions(-)
diff --git a/server/plugins-available/shelluser_base_plugin.inc.php b/server/plugins-available/shelluser_base_plugin.inc.php
index 7e6b485..3222d2c 100755
--- a/server/plugins-available/shelluser_base_plugin.inc.php
+++ b/server/plugins-available/shelluser_base_plugin.inc.php
@@ -32,6 +32,20 @@
var $plugin_name = 'shelluser_base_plugin';
var $class_name = 'shelluser_base_plugin';
+ var $min_uid = 499;
+
+ //* This function is called during ispconfig installation to determine
+ // if a symlink shall be created for this plugin.
+ function onInstall() {
+ global $conf;
+
+ if($conf['services']['web'] == true) {
+ return true;
+ } else {
+ return false;
+ }
+
+ }
/*
@@ -58,23 +72,47 @@
$app->uses('system');
- // Get the UID of the parent user
- $uid = intval($app->system->getuid($data['new']['puser']));
- if($uid > 999) {
- $command = 'useradd';
- $command .= ' --home '.escapeshellcmd($data['new']['dir']);
- $command .= ' --gid '.escapeshellcmd($data['new']['pgroup']);
- $command .= ' --non-unique ';
- $command .= ' --password '.escapeshellcmd($data['new']['password']);
- $command .= ' --shell '.escapeshellcmd($data['new']['shell']);
- $command .= ' --uid '.escapeshellcmd($uid);
- $command .= ' '.escapeshellcmd($data['new']['username']);
+ if($app->system->is_user($data['new']['puser'])) {
+ // Get the UID of the parent user
+ $uid = intval($app->system->getuid($data['new']['puser']));
+ if($uid > $this->min_uid) {
+ $command = 'useradd';
+ $command .= ' -d '.escapeshellcmd($data['new']['dir']);
+ $command .= ' -g '.escapeshellcmd($data['new']['pgroup']);
+ $command .= ' -o '; // non unique
+ if($data['new']['password'] != '') $command .= ' -p '.escapeshellcmd($data['new']['password']);
+ $command .= ' -s '.escapeshellcmd($data['new']['shell']);
+ $command .= ' -u '.escapeshellcmd($uid);
+ $command .= ' '.escapeshellcmd($data['new']['username']);
- exec($command);
- $app->log("Added shelluser: ".$data['new']['username'],LOGLEVEL_DEBUG);
+ exec($command);
+ $app->log("Executed command: ".$command,LOGLEVEL_DEBUG);
+ $app->log("Added shelluser: ".$data['new']['username'],LOGLEVEL_DEBUG);
+
+ // call the ssh-rsa update function
+ $app->uses("getconf");
+ $this->data = $data;
+ $this->app = $app;
+ $this->_setup_ssh_rsa();
+
+ //* Create .bash_history file
+ touch(escapeshellcmd($data['new']['dir']).'/.bash_history');
+ chmod(escapeshellcmd($data['new']['dir']).'/.bash_history', 0755);
+ chown(escapeshellcmd($data['new']['dir']).'/.bash_history', escapeshellcmd($data['new']['username']));
+ chgrp(escapeshellcmd($data['new']['dir']).'/.bash_history', escapeshellcmd($data['new']['pgroup']));
+
+ //* Disable shell user temporarily if we use jailkit
+ if($data['new']['chroot'] == 'jailkit') {
+ $command = 'usermod -s /bin/false -L '.escapeshellcmd($data['new']['username']);
+ exec($command);
+ $app->log("Disabling shelluser temporarily: ".$command,LOGLEVEL_DEBUG);
+ }
+ } else {
+ $app->log("UID = $uid for shelluser:".$data['new']['username']." not allowed.",LOGLEVEL_ERROR);
+ }
} else {
- $app->log("UID = $uid for shelluser:".$data['new']['username']." not allowed.",LOGLEVEL_ERROR);
+ $app->log("Skipping insertion of user:".$data['new']['username'].", parent user ".$data['new']['puser']." does not exist.",LOGLEVEL_WARN);
}
}
@@ -83,24 +121,49 @@
$app->uses('system');
- // Get the UID of the parent user
- $uid = intval($app->system->getuid($data['new']['puser']));
- if($uid > 999) {
- $command = 'usermod';
- $command .= ' --home '.escapeshellcmd($data['new']['dir']);
- $command .= ' --gid '.escapeshellcmd($data['new']['pgroup']);
- $command .= ' --non-unique ';
- $command .= ' --password '.escapeshellcmd($data['new']['password']);
- $command .= ' --shell '.escapeshellcmd($data['new']['shell']);
- $command .= ' --uid '.escapeshellcmd($uid);
- $command .= ' --login '.escapeshellcmd($data['new']['username']);
- $command .= ' '.escapeshellcmd($data['old']['username']);
+ if($app->system->is_user($data['new']['puser'])) {
+ // Get the UID of the parent user
+ $uid = intval($app->system->getuid($data['new']['puser']));
+ if($uid > $this->min_uid) {
+ // Check if the user that we want to update exists, if not, we insert it
+ if($app->system->is_user($data['old']['username'])) {
+ $command = 'usermod';
+ $command .= ' --home '.escapeshellcmd($data['new']['dir']);
+ $command .= ' --gid '.escapeshellcmd($data['new']['pgroup']);
+ // $command .= ' --non-unique ';
+ $command .= ' --password '.escapeshellcmd($data['new']['password']);
+ if($data['new']['chroot'] != 'jailkit') $command .= ' --shell '.escapeshellcmd($data['new']['shell']);
+ // $command .= ' --uid '.escapeshellcmd($uid);
+ $command .= ' --login '.escapeshellcmd($data['new']['username']);
+ $command .= ' '.escapeshellcmd($data['old']['username']);
- exec($command);
- $app->log("Updated shelluser: ".$data['new']['username'],LOGLEVEL_DEBUG);
-
+ exec($command);
+ $app->log("Executed command: $command ",LOGLEVEL_DEBUG);
+ $app->log("Updated shelluser: ".$data['old']['username'],LOGLEVEL_DEBUG);
+
+ // call the ssh-rsa update function
+ $app->uses("getconf");
+ $this->data = $data;
+ $this->app = $app;
+ $this->_setup_ssh_rsa();
+
+ //* Create .bash_history file
+ if(!is_file($data['new']['dir']).'/.bash_history') {
+ touch(escapeshellcmd($data['new']['dir']).'/.bash_history');
+ chmod(escapeshellcmd($data['new']['dir']).'/.bash_history', 0755);
+ chown(escapeshellcmd($data['new']['dir']).'/.bash_history',escapeshellcmd($data['new']['username']));
+ chgrp(escapeshellcmd($data['new']['dir']).'/.bash_history',escapeshellcmd($data['new']['pgroup']));
+ }
+
+ } else {
+ // The user does not exist, so we insert it now
+ $this->insert($event_name,$data);
+ }
+ } else {
+ $app->log("UID = $uid for shelluser:".$data['new']['username']." not allowed.",LOGLEVEL_ERROR);
+ }
} else {
- $app->log("UID = $uid for shelluser:".$data['new']['username']." not allowed.",LOGLEVEL_ERROR);
+ $app->log("Skipping update for user:".$data['new']['username'].", parent user ".$data['new']['puser']." does not exist.",LOGLEVEL_WARN);
}
}
@@ -109,24 +172,84 @@
$app->uses('system');
- // Get the UID of the user
- $userid = intval($app->system->getuid($data['old']['username']));
- if($userid > 999) {
- $command = 'userdel';
- $command .= ' '.escapeshellcmd($data['old']['username']);
+ if($app->system->is_user($data['old']['username'])) {
+ // Get the UID of the user
+ $userid = intval($app->system->getuid($data['old']['username']));
+ if($userid > $this->min_uid) {
+ // We delete only non jailkit users, jailkit users will be deleted by the jailkit plugin.
+ if ($data['old']['chroot'] != "jailkit") {
+ $command = 'userdel -f';
+ $command .= ' '.escapeshellcmd($data['old']['username']);
- exec($command);
- $app->log("Deleted shelluser: ".$data['old']['username'],LOGLEVEL_DEBUG);
+ exec($command);
+ $app->log("Deleted shelluser: ".$data['old']['username'],LOGLEVEL_DEBUG);
+ }
+ } else {
+ $app->log("UID = $userid for shelluser:".$data['old']['username']." not allowed.",LOGLEVEL_ERROR);
+ }
} else {
- $app->log("UID = $userid for shelluser:".$data['new']['username']." not allowed.",LOGLEVEL_ERROR);
+ $app->log("User:".$data['new']['username']." does not exist in in /etc/passwd, skipping delete.",LOGLEVEL_WARN);
}
}
-
+ function _setup_ssh_rsa() {
+ //global $app, $conf;
+ //$app->uses('system');
+ // Okay, here we have a question, .. how to determine the client id
+ //$var = "Var:".intval($this->app->system->getuid($this->data['new']['puser']));
+ //exec("echo $var >> /tmp/debug");
+ /*
+ // ssh-rsa authentication variables
+ $sshrsa = escapeshellcmd($this->data['new']['ssh_rsa']);
+ $usrdir = escapeshellcmd($this->data['new']['dir']);
+ $sshdir = escapeshellcmd($this->data['new']['dir']).'/.ssh';
+ $sshkeys= escapeshellcmd($this->data['new']['dir']).'/.ssh/authorized_keys';
+
+ // determine the client id
+ $id = $this->data['new']['sys_groupid'];
+ if ($id>0) $id = $id -1;
+
+ $user = $app->db->queryOneRecord("SELECT * FROM sys_user WHERE client_id = ".$id);
+ $userkey = $user['ssh_rsa'];
+ $username= $user['username'];
+
+ // If this user has no key yet, generate a pair
+ if ($userkey == '')
+ {
+ //Generate ssh-rsa-keys
+ exec('ssh-keygen -t rsa -C '.$username.'-rsa-key-'.time().' -f /tmp/id_rsa -N ""');
+ $app->db->query("UPDATE client SET created_at = ".time().", id_rsa = '".file_get_contents('/tmp/id_rsa')."', ssh_rsa = '".file_get_contents('/tmp/id_rsa.pub')."' WHERE client_id = ".$this->id;
+ exec('rm -f /tmp/id_rsa /tmp/id_rsa.pub');
+
+ $this->app->log("ssh-rsa keypair generated for ".$username,LOGLEVEL_DEBUG);
+
+ };
+
+ if (!file_exists($sshkeys))
+ {
+ // add root's key
+ exec("mkdir '$sshdir'");
+ exec("cat /root/.ssh/authorized_keys > '$sshkeys'");
+ exec("echo '' >> '$sshkeys'");
+
+ // add the user's key
+ exec("echo '$userkey' >> '$sshkeys'");
+ exec("echo '' >> '$sshkeys'");
+ }
+ // add the custom key
+ exec("echo '$sshrsa' >> '$sshkeys'");
+ exec("echo '' >> '$sshkeys'");
+
+ // set proper file permissions
+ exec("chown -R ".escapeshellcmd($this->data['new']['puser']).":".escapeshellcmd($this->data['new']['pgroup'])." ".$usrdir);
+ exec("chmod 600 '$sshkeys'");
+ */
+ $this->app->log("ssh-rsa key added to ".$sshkeys,LOGLEVEL_DEBUG);
+ }
} // end class
-?>
\ No newline at end of file
+?>
--
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