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# this define realizes all needed resources for a hosted backup
define backupninja_server_realize($host) {
  User               <<| tag == "backupninja-$host" |>>
  File               <<| tag == "backupninja-$host" |>>
  Ssh_authorized_key <<| tag == "backupninja-$host" |>>
}

class backupninja::server {

  $real_backupdir = $backupdir ? {
    '' => "/backup",
    default => $backupdir,
  }
  $real_usermanage = $usermanage ? {
    '' => 'doit',
    default => $usermanage
  }
  $real_backupserver_tag = $backupserver_tag ? {
    '' => $fqdn,
    default => $backupserver_tag
  }
  $real_backupdir_ensure = $backupdir_ensure ? {
    '' => "directory",
    default => $backupdir_ensure,
  }
  
  group { "backupninjas":
    ensure => "present",
    gid => 700
  }
  
  file { "$real_backupdir":
    ensure => "$real_backupdir_ensure",
    mode => 0710, owner => root, group => "backupninjas",
    require => $real_backupdir_ensure ? {
      'directory' => undef,
      default     => File["$real_backupdir_ensure"],
    }
  }

  if $use_nagios {

    include nagios::nsca::client
    
    file { "/usr/local/bin/checkbackups":
      ensure => "present",
      source => "puppet:///modules/backupninja/checkbackups.pl",
      mode => 0755, owner => root, group => root,
    }

    cron { checkbackups:
      command => "/usr/local/bin/checkbackups -d $real_backupdir | /usr/sbin/send_nsca -H $nagios_server -c /etc/send_nsca.cfg | grep -v 'sent to host successfully'",
      user => "root",
      hour => "8-23",
      minute => 59,
      require => [ File["/usr/local/bin/checkbackups"], Package['nsca'] ]
    }
  }

  # collect all resources from hosted backups
  Backupninja_server_realize <<| tag == "$real_backupserver_tag" |>>

  if !defined(Package["rsync"]) {
    if $rsync_ensure_version == '' { $rsync_ensure_version = 'installed' }
    package { 'rsync':
      ensure => $rsync_ensure_version,
    }
  } 

  # this define allows nodes to declare a remote backup sandbox, that have to
  # get created on the server
  define sandbox(
    $user = false, $host = false, $installuser = true, $dir = false, $manage_ssh_dir = true,
    $ssh_dir = false, $authorized_keys_file = false, $key = false, $keytype = 'dss', $backupkeys = false, $uid = false,
    $gid = "backupninjas", $backuptag = false, $nagios2_description = "backups")
  {
    
    $real_user = $user ? {
      false => $name,
      default => $user,
      '' => $name,
    }
    $real_host = $host ? {
      false => $fqdn,
      default => $host,
    }
    $real_backupkeys = $backupkeys ? {
      false => "$fileserver/keys/backupkeys",
      default => $backupkeys,
    }
    $real_dir = $dir ? {
      false => "${backupninja::server::real_backupdir}/$fqdn",
      default => $dir,
    }
    $real_ssh_dir = $ssh_dir ? {
      false => "${real_dir}/.ssh",
      default => $ssh_dir,
    }
    $real_authorized_keys_file = $authorized_keys_file ? {
      false => "authorized_keys",
      default => $authorized_keys_file,
    }
    $real_backuptag = $backuptag ? {
      false => "backupninja-$fqdn",
      default => $backuptag,
    }

    $real_nagios2_description = $nagios2_description ? {
      false => "backups",
      default => $nagios2_description,
    }

    if $use_nagios {
      # configure a passive service check for backups
      nagios::service::passive { $nagios2_description: }
    }
    
    if !defined(Backupninja_server_realize["${fqdn}@${real_host}"]) {
      # this defines just maps that $real_host host backups for $fdqn
      @@backupninja_server_realize { "${fqdn}@${real_host}":
        host => $fqdn,
        tag  => $real_host,
      }
    }

    if !defined(File["$real_dir"]) {
      @@file { "$real_dir":
        ensure => directory,
        mode => 0750, owner => $real_user, group => 0,
        tag => "$real_backuptag",
      }
    }
    case $installuser {
      true: {
        case $manage_ssh_dir {
          true: {
            if !defined(File["$real_ssh_dir"]) {
              @@file { "${real_ssh_dir}":
                ensure => directory,
                mode => 0700, owner => $real_user, group => 0,
                require => [User[$real_user], File["$real_dir"]],
                tag => "$real_backuptag",
              }
            }
          }
        } 
	case $key {
	  false: {
            if !defined(File["${real_ssh_dir}/${real_authorized_keys_file}"]) {
              @@file { "${real_ssh_dir}/${real_authorized_keys_file}":
                ensure => present,
                mode => 0644, owner => 0, group => 0,
                source => "$real_backupkeys/${real_user}_id_${keytype}.pub",
                require => File["${real_ssh_dir}"],
                tag => "$real_backuptag",
              }
            }
	  }
	  default: {
              if !defined(Ssh_autorized_key["$real_user"]) {
                @@ssh_authorized_key{ "$real_user":
                  type    => $keytype,
                  key     => $key,
                  user    => $real_user,
                  target  => "${real_ssh_dir}/${real_authorized_keys_file}",
                  tag     => "$real_backuptag",
                  require => User[$real_user],
                }
              }
     }
	}
        case $uid {
          false: {
            if !defined(User["$real_user"]) {
              @@user { "$real_user":
                ensure  => "present",
                gid     => "$gid",
                comment => "$real_user backup sandbox",
                home    => "$real_dir",
                managehome => true,
                shell   => "/bin/bash",
                password => '*',
                require => Group['backupninjas'],
                tag => "$real_backuptag"
              }
            }
          }
          default: {
            if !defined(User["$real_user"]) {
              @@user { "$real_user":
                ensure  => "present",
                uid     => "$uid",
                gid     => "$gid",
                comment => "$real_user backup sandbox",
                home    => "$real_dir",
                managehome => true,
                shell   => "/bin/bash",
                password => '*',
                require => Group['backupninjas'],
                tag => "$real_backuptag"
              }
            }
          }
        }
      }
    }
  }
}