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#!/usr/bin/perl
use strict;
use warnings;
use Term::ReadKey;
use Net::OpenSSH::Parallel;
use Expect;
use Getopt::Std;
my $timeout = 10;
open my $tty, "+>", "/dev/tty" or die "unable to open tty";
select $tty;
$| = 1;
select STDOUT;
our ($opt_l);
getopt('l:');
@ARGV or die "Usage:\n $0 [-l user] host1 host2 host3 ...\n\n";
ReadMode 2, $tty;
print $tty "Old password: ";
my $old = ReadLine 0, $tty;
print $tty "\nNew password: ";
my $new = ReadLine 0, $tty;
print $tty "\nRetype new password: ";
my $new_bis = ReadLine 0, $tty;
print $tty "\n";
ReadMode 0, $tty;
$new eq $new_bis or die "Sorry, passwords do not match\n";
sub answer_passwd {
my ($expect, $pattern, $pass) = @_;
$expect->expect($timeout, -re => $pattern) or return;
$expect->send($pass);
$expect->expect($timeout, "\n") or return;
1;
}
sub change_password {
my ($host, $ssh) = @_;
my ($pty) = $ssh->open2pty('passwd');
my $expect = Expect->init($pty);
$expect->raw_pty(1);
# $expect->log_user(1);
if (answer_passwd($expect, 'current.*:', $old) and
answer_passwd($expect, 'Enter new.*:', $new) and
answer_passwd($expect, 'Retype new.*:', $new) and
$expect->expect($timeout, "success")) {
exit(0);
}
exit(1);
}
my @ssh_args = (password => $old);
push @ssh_args, (user => $opt_l) if defined $opt_l;
my $pssh = Net::OpenSSH::Parallel->new();
$pssh->add_host($_, @ssh_args) for @ARGV;
$pssh->push('*', parsub => \&change_password);
$pssh->run;
for my $host (@ARGV) {
if ($pssh->get_error($host)) {
print "unable to change password for host $host!\n";
}
else {
print "password changed successfully for host $host.\n";
}
}
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