sudo.pp

# Installs sudo and, optionally, enables Duo for sudo.

# $duo: enable pam_duo for sudo. Defaults to false.
#
# $duo_sudoers: A list of users that are allowed to call sudo.
# Defaults to the empty array.
#
# Example.
# To install sudo with no Duo support:
#
#   include base::sudo
#
# Example.
# To install sudo WITH Duo support
#
#   class { 'base::sudo':
#     duo => true,
#     duo_sudoers => ['adamhl', 'yuelu']
#   }

class base::sudo(
  $duo         = false,
  $duo_sudoers = [],
){
  package { 'sudo':
    ensure => installed
  }

  # If duo is enabled, require base::duo and set up the
  # sudoers file.
  if ($duo) {
    include base::duo

    # Install the pam.d configuration that requires Duo on sudo.
    file {'/etc/pam.d/sudo':
      ensure  => present,
      content => template('base/sudo/etc/pam.d/sudo.erb'),
      require => Class['base::duo'],
    }

    # Install the suoders file. This takes the array $duo_sudoers
    # and puts it into /etc/sudoers.d/duo
    if (downcase($::osfamily) =~ /^debian$/) {
      file {'/etc/sudoers.d/duo':
        ensure  => present,
        content => template('base/sudo/etc/sudoers.d/duo.erb'),
        require => Package['sudo'],
      }
    } else {
      fail("base::sudo with duo does not yet support ${::osfamily}.")
    }
  }
}