# Add the next 2 lines to bash_profile/bashrc file: 
#
#  eval `ssh-agent` > /dev/null
#  alias cvs='/path/to/cvs_wrapper.pl'
#
#!/usr/bin/perl

use strict;
use warnings;
use Expect;
#$Expect::Exp_Internal = 1;
#$Expect::Debug = 3;

my $testcommand = Expect->spawn("ssh-add -l");
$testcommand->log_stdout(0);

if ($testcommand->expect(1, '-re' => 'agent has')) {

	$testcommand->soft_close();

	print "CVS Wrapper\n===========\n\n";

	GET_PASSWD: {

		use Term::ReadKey;

		ReadMode 2;

		print "Enter cvs passwd:";

		my $passwd = <STDIN>;
		chomp $passwd;

		ReadMode 0;
		unless (length $passwd > 4) {
	      	print "\nBad password\n";
 			redo GET_PASSWD;
		}

		my $user = $ENV{'USER'};
		my $home = $ENV{'HOME'};
		my $remoteserv = 'server.name.here';
		my $login = "$user" . '@' . "$remoteserv";

		unless (-e "$home/.ssh/id_dsa.pub") {
		# Set up private keys
		my $command = Expect->spawn("ssh-keygen -t dsa");
		$command->log_stdout(0);
		if ($command->expect(2, '-re' => 'Enter')) {
			print $command "\r"; 
		}
		if ($command->expect(2, '-re' => 'passphrase')) {
			print $command "$passwd\r"; 
		}

		if ($command->expect(2, '-re' => 'same')) {
			print $command "$passwd\r"; 
		}
		$command->soft_close();

		my $copy_command = Expect->spawn("scp ~/.ssh/id_dsa.pub $remoteserv:.ssh/authorized_keys2");
		$copy_command->log_stdout(0);
		if ($copy_command->expect(2, "password")) {
			print $copy_command "$passwd\r";
		}
		if ($copy_command->expect(3, '-re' => 'denied')) {
			$copy_command->hard_close();
			print "\nBad password\n";
			unlink "$home/.ssh/id_dsa.pub", "$home/.ssh/id_dsa";
			redo GET_PASSWD;
		}
		$copy_command->soft_close();

		}

		my $ssha_command = Expect->spawn("ssh-add");
		$ssha_command->log_stdout(0);
		if ($ssha_command->expect(2, "passphrase")) {
			print $ssha_command "$passwd\r";
		}
		if ($ssha_command->expect(1,'-re' =>'Bad')) {
			$ssha_command->hard_close();
			print "\nBad password\n";
			redo GET_PASSWD;
		}
		$ssha_command->soft_close();

		print "\nLogin successful\n";
	} #end GET_PASSWD
} else { $testcommand->soft_close(); }

open DATA, "/usr/bin/cvs @ARGV |" or die "Couldn't execute program: $!";
    while ( defined( my $line = <DATA> ) ) {
        chomp($line);
        print "$line\n";
    }
close DATA;