Topic: Permissions for shell_exec in PHP

[beast]

Can someone please explain to me why

Code: [Select]

php -r "echo shell_exec("ls");"
work fine on the command line but

Code: [Select]

php -r "echo shell_exec("ls /");"
does not?

I try to make a PHP script that will run as a cron job to execute backups etc.

E.g. echo shell_exec("/sbin/affa");"

But I am unable to make it work.

NB: I have tried to change PHPBaseDir

Thank you
Benny

[beast]

Sorry made a mistake. The inner " need to be a '

Code: [Select]

php -r "echo shell_exec('ls /');"
Then it work on the command line but the problem is still there when run in a php file?

[beast]

This is the file I try to exec in a cron job.

The call

php -f backup.php

return right away with no action?

but

php -r "echo shell_exec('/sbin/affa --run prodserv');"

works fine?

Code: [Select]

<?php

// /home/e-smith/files/users/admin/home/backup.php

include_once("phpmailer/class.phpmailer.php");

function isCli() 
{ 
     $sapiname = php_sapi_name();
     
     if((substr($sapiname , 0, 3) == 'cgi') || (substr($sapiname , 0, 3) == 'cli')) // PHP 4 and 5 version    
     if(empty($_SERVER['REMOTE_ADDR'])) 
     {
          return true;
     } 
     
     return false;
}

function mailoutput($to, $mailbody)
{
$mail = new PHPMailer();
$mail->IsMail();
$mail->SetLanguage("en");
$mail->IsHTML(true);
$mail->FromName = "noreply@beast.dk"; 
$mail->From = $mail->FromName;
$mail->Subject = "Backup server log";
$mail->WordWrap = 50;

$mail->MsgHTML($mailbody);
$mail->AltBody = strip_tags(preg_replace("/<br>/", "\r\n", $mailbody));
$mail->AddAddress($to);
if(!$mail->Send()) 
{
die("Mail Error: " . $mail->ErrorInfo);
}
}

$parameters = $_SERVER['argv'];

$mailbody = "<h2>Backup server log</h2>";

//sleep(120);

$starttime = time();

$returnstr = shell_exec("/sbin/affa --run prodserv");

$execmin = (time() - $starttime)/60;

if(strlen($returnstr))
  $mailbody .= $returnstr;
else
  $mailbody .= "<br>Backup performed to backupserver in ".$execmin." minutes";
  
$returnstr = shell_exec("/sbin/affa --list-archives");

if(strlen($returnstr))
  $mailbody .= "<br><br>".nl2br($returnstr);
  
if(isCli())
{
foreach($parameters as $key => $value) 
{
if($key > 0) 
mailoutput($value, $mailbody);
} 
}
else
{
if(isset($_GET['email']))
mailoutput($_GET['email'], $mailbody);
}
  
//shell_exec("/sbin/shutdown -h +15");

?>


[beast]

For some reason it seam to work now ?????

Sorry for the disturbance