problems with perl/cgi and rsh

[GrahamBright]

Hi all,

I'm trying to execute remotely commands from a perl/cgi script.

Working example (perl only)

$DATE=`exec rsh 10.236.137.41 date `;

however within my perl/cgi program if I try to print the value of DATE I get nothing back

Whats strange:

sub check_DATE()

{

open(MDATE, ">>$output") || die "Cannot open log file $!";

($MSISDN) = @_;

$DATE=`exec rsh 10.236.137.41 date`;
print DATE "date is $DATE";
close DATE;
}

resulting flat file contains only "date is " ?

If I provide an invalid IP address I can see that the webpage hangs, so it would appear that rsh is succeeding but no value for DATE.

Can you help or suggest alternatives where I can remotely execute commands from within a perl/CGI script.

Thanks,
Graham.

 

[PaulTEG]

Have a look at Net:erl::SSH or in a LAN environment Net::Telnet, but there's serious security considerations with Net::Telnet outside a LAN, some would say even within a LAN

HTH
--Paul

http://search.cpan.org

cigless ...

 

[GrahamBright]

Thanks Paul,

I found the problem which of course turns into another question. My cgi script executes as user

http://wwwrun

so on the remote machine I get permission denied because this user a/c is not created.

I'm not sure of a way of getting around this without creating the

http://wwwrun

user manually on the remote system.

system "rsh -l root 10.236.136.18 date > /tmp/test1.out 2>/tmp/test1.err";

shows on the local host

-rw-r--r-- 1

http://wwwrun

www 0 Jan 12 15:39 test1.out
-rw-r--r-- 1

http://wwwrun

www 19 Jan 12 15:39 test1.err
-rw-r--r-- 1

http://wwwrun

www 32 Jan 12 15:39 test.out

Thanks
Graham.

 

[GrahamBright]

Thanks again,
Problem resolved, my cgi scripts execute under apache user

http://wwwrun,

created this user on the remote machine problem solved.

Graham.

 

[PaulTEG]

ur welcome


cigless ...