How to scp as different user in perl script

sdubey · #1 (**permalink**) 09-18-2008

Hi,

I am writing a perl script that needs to change to a another user and scp files to a remote server. The passwords should not be prompted but read from a config file.

Please help.

Thanks

Sandeep

avronius · #2 (**permalink**) 09-18-2008

How do you plan on encrypting the config file to prevent it from being read?
It seems to me that the wisest course of action might be:

First, create ssh keys to allow your host to ssh into the remote host

Code:

scp /source/dir/file user@hostname:</target/dir>
scp -r /source/dir user@hostname:<target/dir>

sdubey · #3 (**permalink**) 09-18-2008

Thanks. The config file storing the password will have proper permission set to avoid any other user reading it.

My main problem is, I need to scp as another user. How do I switch user and pass the password in the program. It is always prompting me for the password.

Thanks

avronius · #4 (**permalink**) 09-18-2008

You may consider changing the UID of the person running the perl script. setuid or some such...

Visit CPAN's site and take a look at Net::SCP Net::SCP - Perl extension for secure copy protocol - search.cpan.org.

It's the right way to do this...

avronius · #5 (**permalink**) 09-18-2008

Also, I did a quick google search for "Sending Password with scp", and ran across this site: sshpasswords[modp.com]
Here's what it had to say:

Quote:

#!/usr/bin/env expect -f # -*-tcl-*-
set timeout -1 # wait until done

# trick to pass in command-line args to spawn
eval spawn scp $argv

expect "password: $"
send "password\n"

# wait for regular shell prompt before quitting
# probably a better way using 'wait'
expect "$ $"

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