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ssh using exec()
Posted by wei (wei), 19 June 2007
hii was trying to use ssh using exec() and execute a command from a browser using cgi
$ssh = "sudo ssh ip-address -l root ls /";
$exec = exec("$ssh");
and the result was
Permission denied, please try again.
Permission denied, please try again.
Permission denied (publickey,gssapi-with-mic,password).
i have no idea on how to input the password for the authentication. any helps ?
thanks
Posted by admin (Graham Ellis), 20 June 2007
Typically, passwords are read from /dev/tty and not from STDIN in programs like ssh to avoid them being used as automated breakin tools - which means you have to program around that issue to do it legitimately. I would use expectSee http://www.infocopter.com/perl/expect.htm
Posted by wei (wei), 20 June 2007
hii just tried Expect using ssh at cmd and it work (thanks), but there is an error which said that IO::Stty is not installed and i can find it in CPAN website.
I come across Net::SSH and i tried it in command line which it works, but when i use it from a browser the page can't be load.
#!/usr/bin/perl -w
use Net::SSH:
erl;$destination = "my-IP-addr";
$user = "root";
$password = "my password";
$command = "ls";
my $ssh = Net::SSH:
erl->new($destination);$ssh->login($user,$password);
my ($stdout,$stderr,$exit) = $ssh->cmd($command);
print "Content-type: text/html
<head>
<title>Example</title>
</head>
<body>
<pre>\n";
print "$stdout";
print "</pre>
</body>";
any idea?
thanks
Posted by admin (Graham Ellis), 21 June 2007
Almost ceratinly an issue with the setup or environment. Hard to be more precise without fuller details of how you tested it and what actually happened.This page is a thread posted to the opentalk forum
at www.opentalk.org.uk and
archived here for reference. To jump to the archive index please
follow this link.
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