Class: AptDownloader

Inherits:
Object
  • Object
show all
Defined in:
lib/apt_downloader.rb

Constant Summary collapse

VERSION = 
'1.0.2'
VALID_DEBIAN_ARCHITECTURES = 
%w[alpha amd64 arm armel hppa i386 ia64 mips
mipsel powerpc s390 sparc]
APT_FS_PATH = 
"#{Dir::tmpdir}/apt_fs_#{$$}_"
DEFAULT_DEBIAN_SERVER_LIST = 
['deb     http://security.debian.org/ testing/updates main contrib non-free',
 'deb-src http://security.debian.org/ testing/updates main contrib non-free',
 'deb     http://security.debian.org/ stable/updates main contrib non-free',
 'deb-src http://security.debian.org/ stable/updates main contrib non-free',
 # Main archives
 'deb     http://ftp.us.debian.org/debian/ stable main non-free contrib',
 'deb-src http://ftp.us.debian.org/debian/ stable main non-free contrib',
 'deb     http://ftp.us.debian.org/debian/ testing main non-free contrib',
 'deb-src http://ftp.us.debian.org/debian/ testing main non-free contrib',
 'deb     http://ftp.us.debian.org/debian/ unstable main non-free contrib',
 'deb-src http://ftp.us.debian.org/debian/ unstable main non-free contrib',

 'deb     http://ftp.us.debian.org/debian/ ' +
 'experimental main non-free contrib',

 'deb-src http://ftp.us.debian.org/debian/ ' +
 'experimental main non-free contrib',

 # --- debian-multimedia
 # deb http://www.debian-multimedia.org etch main'
 'deb http://www.debian-multimedia.org unstable main',
 'deb http://www.debian-multimedia.org testing main',
 'deb http://www.debian-multimedia.org experimental main',
 'deb-src http://www.debian-multimedia.org sid main',
]

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(architecture = 'armel', *packages) ⇒ AptDownloader

Returns a new instance of AptDownloader.



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# File 'lib/apt_downloader.rb', line 148

def initialize architecture='armel', *packages
  @packages         = []
  packages.each{ |package| addPackage package }

  @already_updated  = false
  @apt_config       = nil
  @apt_tmp_fs       = nil
  
  @architecture     = architecture
  @download_dir     = nil
  @extract_dir      = nil
  @sudo_extract     = false
  @dependencies     = []
  @suggestions      = []
  @all_dependencies = []
  @all_suggestions  = []
end

Instance Attribute Details

#apt_tmp_fs ⇒ Object

Returns the value of attribute apt_tmp_fs.



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# File 'lib/apt_downloader.rb', line 91

def apt_tmp_fs
  @apt_tmp_fs
end

#architecture ⇒ Object

Returns the value of attribute architecture.



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# File 'lib/apt_downloader.rb', line 91

def architecture
  @architecture
end

#download_dir ⇒ Object

Returns the value of attribute download_dir.



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# File 'lib/apt_downloader.rb', line 91

def download_dir
  @download_dir
end

#extract_dir ⇒ Object

Returns the value of attribute extract_dir.



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# File 'lib/apt_downloader.rb', line 91

def extract_dir
  @extract_dir
end

#packages ⇒ Object (readonly)

at this point packages once added can’t be deleted, until i implement apt-remove to get rid of them from apt-tmp-fs



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# File 'lib/apt_downloader.rb', line 97

def packages
  @packages
end

#sudo_extract ⇒ Object

Returns the value of attribute sudo_extract.



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# File 'lib/apt_downloader.rb', line 92

def sudo_extract
  @sudo_extract
end

Class Method Details

.validPackage?(packageName) ⇒ Boolean

Returns true if packageName is a real debian package, and false otherwise

Returns:

  • (Boolean) 


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# File 'lib/apt_downloader.rb', line 212

def AptDownloader.validPackage? packageName
  result = %x[apt-cache pkgnames]
  result.split("\n").include?(packageName)
end

Instance Method Details

#_get_dependencies_backend(callword, searchword, recurse = false) ⇒ Object

internal use only



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# File 'lib/apt_downloader.rb', line 239

def _get_dependencies_backend callword, searchword, recurse=false
  unless @packages
    raise StandardError, "No packages set!"
  end
  dependencies = packages.map { |package|
    deps = %x[apt-cache #{recurse ? '--recurse' : ''} #{callword} #{package}]
    deps = deps.map{ |x|
      # get rid of coflicts/and other messages we aren't lookign for
      x = x.sub!(searchword, '') ? x.strip! : ''
      x = x.include?('|') ? '' : x
    }
  }
  dependencies.flatten!.uniq!
  dependencies.delete ''
  dependencies
end

#addPackage(package) ⇒ Object 



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# File 'lib/apt_downloader.rb', line 226

def addPackage(package)
  addPackages package
end

#addPackages(*packageNames) ⇒ Object 



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# File 'lib/apt_downloader.rb', line 217

def addPackages(*packageNames)
  packageNames.each { |name|
    unless AptDownloader::validPackage? name
      raise ArgumentError, "Package #{name} does not exist."
    end
    @packages << name
  }
end

#config_file_contents ⇒ Object 



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# File 'lib/apt_downloader.rb', line 40

def config_file_contents
  return <<-EOS
APT "";
APT::Architecture "#{@architecture}";
APT::Build-Essential "";
APT::Build-Essential:: "build-essential";
APT::Install-Recommends "1";
APT::Install-Suggests "0";
APT::Acquire "";
APT::Acquire::Translation "environment";
APT::Authentication "";
APT::Authentication::TrustCDROM "true";
APT::NeverAutoRemove "";
APT::NeverAutoRemove:: "^linux-image.*";
APT::NeverAutoRemove:: "^linux-restricted-modules.*";
APT::Default-Release "testing";
APT::Cache-Limit "141943904";
Dir "#{APT_FS_PATH}/";
Dir::State "#{APT_FS_PATH}/var/lib/apt/";
Dir::State::lists "lists/";
Dir::State::cdroms "cdroms.list";
Dir::State::userstatus "status.user";
Dir::State::status "#{APT_FS_PATH}/var/lib/dpkg/status";
Dir::Cache "#{APT_FS_PATH}/var/cache/apt/";
Dir::Cache::archives "archives/";
Dir::Cache::srcpkgcache "srcpkgcache.bin";
Dir::Cache::pkgcache "pkgcache.bin";
Dir::Etc "etc/apt/";
Dir::Etc::sourcelist "sources.list";
Dir::Etc::sourceparts "sources.list.d";
Dir::Etc::vendorlist "vendors.list";
Dir::Etc::vendorparts "vendors.list.d";
Dir::Etc::main "apt.conf";
Dir::Etc::parts "apt.conf.d";
Dir::Etc::preferences "preferences";
Dir::Bin "";
Dir::Bin::methods "/usr/lib/apt/methods";
Dir::Bin::dpkg "/usr/bin/dpkg";
Dir::Log "#{APT_FS_PATH}/var/log/apt";
Dir::Log::Terminal "term.log";
DPkg "";
DPkg::Pre-Install-Pkgs "";
DPkg::Pre-Install-Pkgs:: "/usr/sbin/dpkg-preconfigure --apt || true";
DPkg::Post-Invoke "";
DPkg::Post-Invoke:: "if [ -x /usr/bin/debsums ]; then /usr/bin/debsums --generate=nocheck -sp /var/cache/apt/archives; fi";

EOS

end

#create_apt_fs ⇒ Object

create a temprorary directory structure that imititates the parts of the linux filesystem that apt cares about



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# File 'lib/apt_downloader.rb', line 107

def create_apt_fs
  # create a temporary directory to do all downloads to
  @apt_tmp_fs = FileUtils.mkpath APT_FS_PATH

  %w[/etc/apt/
     /var/cache/apt/archives/partial
     /var/lib/apt/lists/partial
     /var/lib/dpkg/
    ].each{ |directory| FileUtils.mkpath(APT_FS_PATH + directory) }

  %w[/var/lib/dpkg/lock
     /var/lib/dpkg/status
     /var/lib/apt/lists/lock
     /etc/apt/sources.list
    ].each{ |file| FileUtils.touch(APT_FS_PATH + file) }

  File.open(APT_FS_PATH + "/etc/apt/sources.list",
            File::WRONLY |
            File::TRUNC |
            File::CREAT ) { |sources_file|
    DEFAULT_DEBIAN_SERVER_LIST.each{ |source| sources_file.puts source }
  }

  # set up directory for removal on program delete
  at_exit{ FileUtils.rm_rf APT_FS_PATH  }
end

#create_config_file ⇒ Object 



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# File 'lib/apt_downloader.rb', line 99

def create_config_file
  @apt_config = Tempfile.new 'config_file'
  @apt_config.sync = true
  @apt_config.write config_file_contents
end

#depends ⇒ Object 



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# File 'lib/apt_downloader.rb', line 256

def depends
  @dependencies = _get_dependencies_backend 'depends', 'Depends:'
end

#download(packages) ⇒ Object 



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# File 'lib/apt_downloader.rb', line 135

def download packages
  call = "apt-get -c #{@apt_config.path} update"
  puts "** apt-downloader: #{call}"
  system(call) unless @already_updated

  @already_updated = true

  call = "apt-get -c #{@apt_config.path} --download-only " +
         "--assume-yes --force-yes install #{packages}"
  puts "\n** apt-downloader: #{call}"
  system(call)
end

#go ⇒ Object 



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# File 'lib/apt_downloader.rb', line 199

def go
  create_config_file unless @apt_config
  create_apt_fs unless @apt_tmp_fs

  packages_string = ''
  packages.each{ |package| packages_string += package + ' ' }
  download packages_string

  _copy_debs_to @download_dir if (@download_dir)
  _extract_debs_to @extract_dir if(@extract_dir)
end

#recursiveDepends ⇒ Object 



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# File 'lib/apt_downloader.rb', line 264

def recursiveDepends
  @all_dependencies = _get_dependencies_backend 'depends', 'Depends:', true
end

#recursiveSuggests ⇒ Object 



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# File 'lib/apt_downloader.rb', line 268

def recursiveSuggests
  @all_suggestions = _get_dependencies_backend 'depends', 'Suggests:', true
end

#suggests ⇒ Object 



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# File 'lib/apt_downloader.rb', line 260

def suggests
  @suggestions = _get_dependencies_backend 'depends', 'Suggests:'
end