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# apt.pp - common components and defaults for handling apt
# Copyright (C) 2008 Micah Anerson <micah@riseup.net>
# Copyright (C) 2007 David Schmitt <david@schmitt.edv-bus.at>
# See LICENSE for the full license granted to you.

class apt {

	# See README
	$real_apt_clean = $apt_clean ? {
		'' => 'auto',
		default => $apt_clean,
	}

	$backports_enabled = $backports_enabled ? {
		'' => 'false',
		default => $backports_enabled,
	}

  $apt_update_method = $apt_update_method ? {
    ''      => 'exec',
    default => $apt_update_method,
  }

  $apt_http_proxy = $apt_http_proxy ? {
    ''      => false,
    default => $apt_http_proxy,
  }

  $apt_ftp_proxy = $apt_ftp_proxy ? {
    ''      => false,
    default => $apt_ftp_proxy,
  }

	package { apt: ensure => installed }

	# a few templates need lsbdistcodename
	include assert_lsbdistcodename

	case $custom_sources_list {
		'': {
			include default_sources_list
		}
		default: {
			config_file { "/etc/apt/sources.list":
				content => $custom_sources_list,
				require => Exec[assert_lsbdistcodename];
			}
		}
	}

	class default_sources_list {
		config_file {
			# include main, security and backports
			# additional sources could be included via an array
			"/etc/apt/sources.list":
				content => template("apt/sources.list.erb"),
				require => Exec[assert_lsbdistcodename];
		}
	}

        case $custom_preferences {
          '': {
            include default_preferences
          }
          default: {
            config_file { "/etc/apt/preferences":
              content => $custom_preferences,
              alias => apt_config,
              require => File["/etc/apt/sources.list"];
            }
          }
        }
        class default_preferences {
	  config_file {
	    # this just pins unstable and testing to very low values
	    "/etc/apt/preferences":
	      content => template("apt/preferences.erb"),
	      # use File[apt_config] to reference a completed configuration
	      # See "The Puppet Semaphor" 2007-06-25 on the puppet-users ML
	      alias => apt_config,
	      # only update together
	      require => File["/etc/apt/sources.list"];
	    # little default settings which keep the system sane
	    "/etc/apt/apt.conf.d/from_puppet":
	      content => "APT::Get::Show-Upgraded true;\nDSelect::Clean $real_apt_clean;\n",
	      before => File[apt_config];
	  }
        }

  $apt_base_dir = "${module_dir_path}/apt"
	module_dir { apt: }
	# watch apt.conf.d
	file { "/etc/apt/apt.conf.d": ensure => directory, checksum => mtime; }

	exec {
		# "&& sleep 1" is workaround for older(?) clients
		"/usr/bin/apt-get update && sleep 1 #on refresh":
			refreshonly => true,
			subscribe => [ File["/etc/apt/sources.list"],
				File["/etc/apt/preferences"], File["/etc/apt/apt.conf.d"],
				File[apt_config] ],
  }

  if $apt_update_method == 'exec' {
    exec { "/usr/bin/apt-get update && /usr/bin/apt-get autoclean #hourly":
      require => [ File["/etc/apt/sources.list"], File["/etc/apt/preferences"], File[apt_config] ],
      # Another Semaphor for all packages to reference
      alias => apt_updated,
  	}
  } else {
    cron { "apt_updated":
      command  => "/usr/bin/apt-get update &> /dev/null && /usr/bin/apt-get autoclean &> /dev/null",
      user     => root,
      hour     => "*/1",
      minute   => "0",
      ensure   => present,
      require => [ File["/etc/apt/sources.list"], File["/etc/apt/preferences"], File[apt_config] ],
    }
  }
	      
	## This package should really always be current
	package { "debian-archive-keyring":
	  ensure => latest,
	}

	case $backports_enabled {
	  true: {   
	      config_file {
		      # backports
		      "/etc/apt/sources.list.d/debian-backports.list":
			      content => template("apt/sources.list.backports.erb"),
			      require => Exec[assert_lsbdistcodename];
	      }
		
	      case $lsbdistcodename {
		      etch: {
			package { "debian-backports-keyring":
			  ensure => latest,
			}
			
			# This key was downloaded from
			# http://backports.org/debian/archive.key
			# and is needed to bootstrap the backports trustpath
			file { "${apt_base_dir}/backports.org.key":
			  source => "puppet://$server/modules/apt/backports.org.key",
			  mode => 0444, owner => root, group => root,
			}
			exec { "/usr/bin/apt-key add ${apt_base_dir}/backports.org.key && apt-get update":
			  alias => "backports_key",
			  refreshonly => true,
			  subscribe => File["${apt_base_dir}/backports.org.key"],
			  before => [ File[apt_config], Package["debian-backports-keyring"] ]
			}
		      }
		      lenny: {
			package { "debian-backports-keyring":
			  ensure => latest,
			}

			# This key was downloaded from
			# http://backports.org/debian/archive.key
			# and is needed to bootstrap the backports trustpath
			file { "${apt_base_dir}/backports.org.key":
			  source => "puppet://$server/modules/apt/backports.org.key",
			  mode => 0444, owner => root, group => root,
			}
			exec { "/usr/bin/apt-key add ${apt_base_dir}/backports.org.key && apt-get update":
			  alias => "backports_key",
			  refreshonly => true,
			  subscribe => File["${apt_base_dir}/backports.org.key"],
			  before => [ File[apt_config], Package["debian-backports-keyring"] ]
			}
		      }
	      }
	  
	  }
	  default: { }
	}

    

        case $custom_key_dir {
          '': { }
          default: {
            file { "${apt_base_dir}/keys.d":
              source => "$custom_key_dir",
              recurse => true,
              mode => 0755, owner => root, group => root,
            }
            exec { "find ${apt_base_dir}/keys.d -type f -exec apt-key add '{}' \\; && apt-get update":
              alias => "custom_keys",
              subscribe => File["${apt_base_dir}/keys.d"],
              refreshonly => true,
              before => File[apt_config];
            }
          }
        }

        # workaround for preseeded_package component
        file { "/var/cache": ensure => directory }
        file { "/var/cache/local": ensure => directory }
        file { "/var/cache/local/preseeding/": ensure => directory }

        define preseeded_package ($content = "", $ensure = "installed") {
          $seedfile = "/var/cache/local/preseeding/$name.seeds"
          $real_content = $content ? {
            "" => template ( "$debian_version/$name.seeds" ),
            Default => $content
          }
  
          file{ $seedfile:
            content => $real_content,
            mode => 0600, owner => root, group => root,
          }
  
          package { $name:
            ensure => $ensure,
            responsefile => $seedfile,
            require => File[$seedfile],
          }
        }

        define upgrade_package ($version = "") {
          case $version { 
            '': { 
              exec { "aptitude -y install $name": 
                onlyif => [ "grep-status -F Status installed -a -P $name -q", "apt-show-versions -u $name | grep -q upgradeable" ],
              }
            }
            'latest': { 
              exec { "aptitude -y install $name": 
                onlyif => [ "grep-status -F Status installed -a -P $name -q", "apt-show-versions -u $name | grep -q upgradeable" ],
              }
            }
            default: { 
              exec { "aptitude -y install $name=$version": 
                onlyif => [ "grep-status -F Status installed -a -P $name -q", "apt-show-versions -u $name | grep -q upgradeable" ],
              } 
            }
          }
        }

       if $apt_http_proxy or $apt_ftp_proxy {
         file { "/etc/apt/apt.conf.d/proxy":
           owner   => root,
           group   => root,
           mode    => 0644,
           content => template("apt/proxy.erb"),
	         require => File[apt_config],
         }
       } else {
         file { "/etc/apt/apt.conf.d/proxy":
           ensure => absent,
         }
       }
}       

class dselect {
	# suppress annoying help texts of dselect
	line { dselect_expert:
		file => "/etc/dpkg/dselect.cfg",
		line => "expert",
		ensure => present,
	}

	package { dselect: ensure => installed }
}