I actually wanted to call php's mail function which I could not get to work, I
think I have tracked to problem down to exec not working
the details follow using a test web page datetest.php
newweb:/var/www/htdocs/web # cat datetest.php
cat datetest.php
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML>
<HEAD>
<title>Date Test</title>
</HEAD>
<p>
<?php
ini_set('display_errors', 'On');
error_reporting(E_ALL | E_STRICT);
if(function_exists('exec')) {
echo "exec is enabled";
} else {
echo "exec is disabled";
}
echo '<br>Date Test<br>';
exec('/bin/date',$output);
print_r($output);
echo '<br>End Date test';
?>
</p>
</HTML>
newweb:/var/www/htdocs/web # php-7.0 -f datetest.php
php-7.0 -f datetest.php
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML>
<HEAD>
<title>Date Test</title>
</HEAD>
<p>
exec is enabled<br>Date Test<br>Array
(
[0] => Fri Nov 4 13:16:35 EDT 2016
)
<br>End Date test</p>
</HTML>
newweb:/var/www/htdocs/web # # date has been copied under /var/www/bin for
testing
# date has been copied under /var/www/bin
newweb:/var/www/htdocs/web # ls -l /var/www/bin
ls -l /var/www/bin
total 4216
---------- 1 root bin 249392 Jul 26 14:48 bgpctl
-rwxr-xr-x 1 root daemon 119216 Nov 3 13:18 cat
-r-xr-xr-x 1 root daemon 140112 Nov 4 12:52 date
-rwxr-xr-x 1 root bin 271856 Jul 25 20:37 femail
-rwxr-xr-x 1 root daemon 470096 Nov 3 12:49 ksh
-rwxr-xr-x 1 root daemon 9816 Nov 3 12:51 logger
-rwxrwxrwx 1 root daemon 27 Nov 3 15:56 mailtest
-rwxr-xr-x 1 root bin 204240 Jul 26 14:48 ping
---------- 1 root bin 207920 Jul 26 14:48 ping6
---------- 2 root bin 179760 Jul 26 14:48 traceroute
---------- 2 root bin 179760 Jul 26 14:48 traceroute6
newweb:/var/www/htdocs/web # chroot -u www /var/www /bin/date
chroot -u www /var/www /bin/date
Fri Nov 4 17:18:34 GMT 2016
I believe this shows that the php web page is correct and that 'date' does
exist in the chroot,
but when I invoke web page from a browser I get.
exec is enabled
Date Test
Array ( )
End Date test
What am I doing wrong.
