Friday, February 10, 2017

These are a few of my favorite modules

I was messing around with Xen on Slackware 14.2 and got my system goofed up.  The console worked but the mouse and keyboard would not function in X.  So, after a bit of flailing, I did a distro upgrade (from Slackware 14.2 to current), re-ran liloconfig and,  ta-dah! -Success! 

I noticed Perl didn't work however.  It upgraded Perl but the modules were "mis-matched" it said.  After some googling, I ran across several suggested fixes.  The simplest seemed to me the brute force - delete all Perl references and reinstall Perl - which I did.

Now I had a NEW problem.  NO MODULES AT ALL.  Began slowly adding modules as I needed them but today that was getting old.  So I did a quick grep of a few hundred of my Perl programs to see which modules I was using and then did a cpan install of all of them.  It's still running...

Which Perl modules you ask?  Well, to satisfy your curiosity and have this list handy the next time I install a fresh Perl - here's my list:

Gimp Gimp::Fu File::stat Time::localtime DBI Net::LDAP Net::LDAP::Bind Net::LDAP::Search MIME::Lite Net::Nslookup Nmap::Scanner Net::SSL::ExpireDate XML::RSS XML::Simple Test::Simple Net::LDAP::LDIF File::Basename CGI::Carp Net::SNMP SQL::Abstract Text::xSV Pod::HTML2Pod LWP::Simple LWP::UserAgent Net::IMAP::Simple Mojo::UserAgent Data::Dumper Date::Manip Net::Twitter DBD::SQLite Net::DNS Net::Telnet::Cisco DBD::Sybase Crypt::GPG File::Slurp utf8 Socket Net::DNS AnyEvent Net::RabbitFoot WWW::Mechanize HTTP::Cookies File::Copy

Wow.  That's actually shorter than I thought.  It looked more impressive as one line.  ;-)

Thursday, January 5, 2017

Ansible Playbook and Perl (or 'Salted MD5 - Yummo!')

Not much of an article here - just some notes about encrypting passwords for Ansible playbooks.  All of the examples for adding the encrypted passwords to the ansible playbook are Python (what's up with that?!) :-)

So, I have an example of a playbook to change a user password on all ansible systems and I have translated the password encryption field for Perl (you're welcome!)

Here's my chgUserPW.yml:

- hosts: all
  sudo: yes
  - name: Change user1 password
    # Created passwd with:
    # perl -e 'print crypt("your pw here","\$6\$salt\$")'
    # Notes: password, 6 = md5, salt = random string to salt entropy
    user: name=user1 update_password=always password=$6$salt$sjuT2.eSTcX/vKwW7RlB1tdLxyB34lJSsndXA5yzC7BZrdAkiAOqtf4NPtHa0tjdFa/5wcS1.vt0LAwzEassr0

All you do is run the Perl one-liner adding your own password and salt string (the word "salt" is probably not a good choice) and you get the format for the password Linux is expecting (salted MD5).  Paste that into the password field and you can now change all of your system's user1 passwords to "your pw here".

*Disclaimer - I'd try it on a single system first, preferably one you have a backdoor root account on.  It worked for me.  Good luck!