test_exec.php

<?php
 
if (!defined('NOREQUIREUSER')) {
  define('NOREQUIREUSER', '1');
}
if (!defined('NOREQUIREDB')) {
  define('NOREQUIREDB', '1');
}
if (!defined('NOREQUIRESOC')) {
  define('NOREQUIRESOC', '1');
}
if (!defined('NOREQUIRETRAN')) {
  define('NOREQUIRETRAN', '1');
}
if (!defined('NOSTYLECHECK')) {
  define('NOSTYLECHECK', '1'); // Do not check style html tag into posted data
}
if (!defined('NOREQUIREMENU')) {
  define('NOREQUIREMENU', '1'); // If there is no need to load and show top and left menu
}
if (!defined('NOREQUIREHTML')) {
  define('NOREQUIREHTML', '1'); // If we don't need to load the html.form.class.php
}
if (!defined('NOREQUIREAJAX')) {
  define('NOREQUIREAJAX', '1'); // Do not load ajax.lib.php library
}
if (!defined("NOLOGIN")) {
  define("NOLOGIN", '1'); // If this page is public (can be called outside logged session)
}
// If you don't need session management (can't be logged if no session used). You must also set
// NOCSRFCHECK, NOTOKENRENEWAL, NOLOGIN
// Disable module with GETPOST('disablemodules') won't work. Variable 'dol_...' will not be set.
// $_SESSION are then simple vars if sessions are not active.
// TODO We can close session with session_write_close() as soon as we just need read access everywhere in code.
if (!defined("NOSESSION")) {
  define("NOSESSION", '1');
}
 
// Load Dolibarr environment
require '../../main.inc.php';
 
// Security
if ($dolibarr_main_prod) {
  accessforbidden('Access forbidden when $dolibarr_main_prod is set to 1');
}
 
 
/*
 * View
 */
 
header("Content-type: text/html; charset=UTF8");
 
// Security options
header("X-Content-Type-Options: nosniff"); // With the nosniff option, if the server says the content is text/html, the browser will render it as text/html (note that most browsers now force this option to on)
header("X-Frame-Options: SAMEORIGIN"); // Frames allowed only if on same domain (stop some XSS attacks)
 
print "*** TEST READ OF /tmp/test.txt FILE (Example: if file exists and owned by apache process owner + PrivateTmp is false + apparmor rules allows read of owned files in /tmp/, then you should see the file)<br>\n";
 
$out='';
$ret=0;
 
$file = '/tmp/test.txt';
$f=fopen($file, 'r');
if ($f) {
  $s=fread($f, 4096);
  print $s;
  fclose($f);
} else {
  print "Failed to open file ".$file."<br>\n";
}
 
print '<br><br>'."\n";
 
 
print "*** TEST READ OF /test.txt FILE AND LS /dev/std*<br>\n";
 
exec('cat /test.txt; ls /dev/std*; sleep 1;', $out, $ret);
print "ret=".$ret."<br>\n";
print_r($out);
print '<br>';
 
print '<br><br>'."\n";
 
 
print "*** TRY TO RUN CLAMDSCAN<br>\n";
 
$ret = 0;
$out = null;
exec('/usr/bin/clamdscan --fdpass filethatdoesnotexists.php', $out, $ret);
print "ret=".$ret."<br>\n";
print_r($out);