# 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 $remot
+eserv:.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;
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