LDAPAccountManager/lam/lib/lamdaemon.inc

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<?php
/*
$Id$
This code is part of LDAP Account Manager (http://www.sourceforge.net/projects/lam)
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Copyright (C) 2004 - 2006 Roland Gruber
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/**
* This file includes functions to control lamdaemon.
*
* @author Tilo Lutz
* @author Roland Gruber
*
* @package modules
*/
/**
* Sends commands to lamdaemon script.
*
* @param array $commands List of command lines
* @return array Output of lamdaemon
*
*/
function lamdaemon($commands) {
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// use new PHP SSH mechanismn
if (function_exists("ssh2_connect")) {
return lamdaemonSSH($commands);
}
// get username and password of the current lam-admin
$ldap_q = $_SESSION['ldap']->decrypt_login();
$userstring = implode ("\n", $commands);
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$output_array = array();
if (function_exists('proc_open')) {
// New Code, requires PHP 4.3
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$towrite = escapeshellarg($_SESSION['config']->scriptServer)." ".escapeshellarg($_SESSION['config']->scriptPath)." - -";
$descriptorspec = array(
0 => array("pipe", "r"), // stdin
1 => array("pipe", "w"), // stout
2 => array("file", "/dev/null", "a") // sterr
);
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$process = proc_open(escapeshellarg($_SESSION['lampath']."lib/lamdaemonOld.pl")." ".$towrite,
$descriptorspec,
$pipes);
if (is_resource($process)) {
/* perl-script is running
* $pipes[0] is writeable handle to child stdin
* $pipes[1] is readable handle to child stdout
* any error is send to /dev/null
*/
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// user+passwd
fwrite($pipes[0], $ldap_q[0] . "\n");
fwrite($pipes[0], $ldap_q[1] . "\n");
// Write to stdin
fwrite($pipes[0], $userstring);
}
fclose($pipes[0]);
while (!feof($pipes[1])) {
$output = fgets($pipes[1], 1024);
if ($output!='') $output_array[] = $output;
}
fclose($pipes[1]);
proc_close($process);
}
else { // PHP 4.3>
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$towrite = escapeshellarg($_SESSION['config']->scriptServer)." ".escapeshellarg($_SESSION['config']->scriptPath)." ".
escapeshellarg($ldap_q[0]).' '.escapeshellarg($ldap_q[1]);
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$command = escapeshellarg($_SESSION['lampath']."lib/lamdaemonOld.pl")." ".$towrite;
$pipe = popen("echo \"$userstring\"|$command" , 'r');
while(!feof($pipe)) {
//$output .= fread($pipe, 1024);
$output = fgets($pipe, 1024);
if ($output!='') $output_array[] = $output;
}
pclose($pipe);
}
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if (sizeof($output_array) > 0) {
return $output_array;
}
else {
return false;
}
}
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/**
* Sends commands to lamdaemon script via PHP SSH functions.
*
* @param array $commands List of command lines
* @return array Output of lamdaemon
*
*/
function lamdaemonSSH($commands) {
$commands = implode("\n", $commands) . "\n";
// get username and password of the current lam-admin
$credentials = $_SESSION['ldap']->decrypt_login();
$handle = ssh2_connect($_SESSION['config']->scriptServer);
if ($handle) {
$sr = ldap_read($_SESSION['ldap']->server(), $credentials[0], "objectClass=posixAccount", array('uid'));
$entry = ldap_get_entries($_SESSION['ldap']->server(), $sr);
$userName = $entry[0]['uid'][0];
if (!$userName) return array();
if (@ssh2_auth_password($handle, $userName, $credentials[1])) {
$shell = ssh2_exec($handle, "sudo " . $_SESSION['config']->scriptPath);
fwrite($shell, $commands);
$return = array();
$time = time() + (sizeof($commands) * 30);
while (sizeof($return) < sizeof($commands)) {
if ($time < time()) {
$return = array("ERROR," . _("Timeout while executing lamdaemon commands!") . ",");
return $return;
}
usleep(100);
$read = split("\n", trim(fread($shell, 100000)));
if ((sizeof($read) == 1) && (!isset($read[0]) || ($read[0] == ""))) continue;
for ($i = 0; $i < sizeof($read); $i++) {
$return[] = $read[$i];
}
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}
return $return;
}
else {
$return = array("ERROR," . _('Unable to connect to remote server!') . "," . $_SESSION['config']->scriptServer);
return $return;
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}
}
return array();
}
?>