Class: Cask::Installer

Inherits:
Object
  • Object
show all
Extended by:
Predicable
Includes:
Staged
Defined in:
brew/Library/Homebrew/cask/installer.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Predicable

attr_predicate

Methods included from Staged

#set_ownership, #set_permissions

Constructor Details

#initialize(cask, command: SystemCommand, force: false, skip_cask_deps: false, binaries: true, verbose: false, require_sha: false, upgrade: false, installed_as_dependency: false, quarantine: true) ⇒ Installer

Returns a new instance of Installer.



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# File 'brew/Library/Homebrew/cask/installer.rb', line 25

def initialize(cask, command: SystemCommand, force: false,
               skip_cask_deps: false, binaries: true, verbose: false,
               require_sha: false, upgrade: false,
               installed_as_dependency: false, quarantine: true)
  @cask = cask
  @command = command
  @force = force
  @skip_cask_deps = skip_cask_deps
  @binaries = binaries
  @verbose = verbose
  @require_sha = require_sha
  @reinstall = false
  @upgrade = upgrade
  @installed_as_dependency = installed_as_dependency
  @quarantine = quarantine
end

Class Method Details

.caveats(cask) ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 46

def self.caveats(cask)
  odebug "Printing caveats"

  caveats = cask.caveats
  return if caveats.empty?

  <<~EOS
    #{ohai_title "Caveats"}
    #{caveats}
  EOS
end

Instance Method Details

#arch_dependencies ⇒ Object

Raises:



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# File 'brew/Library/Homebrew/cask/installer.rb', line 263

def arch_dependencies
  return if @cask.depends_on.arch.nil?

  @current_arch ||= { type: Hardware::CPU.type, bits: Hardware::CPU.bits }
  return if @cask.depends_on.arch.any? do |arch|
    arch[:type] == @current_arch[:type] &&
    Array(arch[:bits]).include?(@current_arch[:bits])
  end

  raise CaskError,
        "Cask #{@cask} depends on hardware architecture being one of " \
        "[#{@cask.depends_on.arch.map(&:to_s).join(", ")}], " \
        "but you are running #{@current_arch}"
end

#backup ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 415

def backup
  @cask.staged_path.rename backup_path
  @cask.metadata_versioned_path.rename backup_metadata_path
end

#backup_metadata_path ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 488

def backup_metadata_path
  return if @cask.metadata_versioned_path.nil?

  Pathname("#{@cask.metadata_versioned_path}.upgrading")
end

#backup_path ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 482

def backup_path
  return if @cask.staged_path.nil?

  Pathname("#{@cask.staged_path}.upgrading")
end

#cask_and_formula_dependencies ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 336

def cask_and_formula_dependencies
  return if installed_as_dependency?

  formulae_and_casks = collect_cask_and_formula_dependencies

  return if formulae_and_casks.empty?

  missing_formulae_and_casks = missing_cask_and_formula_dependencies

  if missing_formulae_and_casks.empty?
    puts "All Formula dependencies satisfied."
    return
  end

  ohai "Installing dependencies: #{missing_formulae_and_casks.map(&:to_s).join(", ")}"
  missing_formulae_and_casks.each do |cask_or_formula|
    if cask_or_formula.is_a?(Cask)
      if skip_cask_deps?
        opoo "`--skip-cask-deps` is set; skipping installation of #{@cask}."
        next
      end

      Installer.new(
        cask_or_formula,
        binaries:                binaries?,
        verbose:                 verbose?,
        installed_as_dependency: true,
        force:                   false,
      ).install
    else
      FormulaInstaller.new(cask_or_formula).yield_self do |fi|
        fi.installed_as_dependency = true
        fi.installed_on_request = false
        fi.show_header = true
        fi.verbose = verbose?
        fi.prelude
        fi.install
        fi.finish
      end
    end
  end
end

#caveats ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 379

def caveats
  self.class.caveats(@cask)
end

#check_conflicts ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 113

def check_conflicts
  return unless @cask.conflicts_with

  @cask.conflicts_with[:cask].each do |conflicting_cask|
    conflicting_cask = CaskLoader.load(conflicting_cask)
    raise CaskConflictError.new(@cask, conflicting_cask) if conflicting_cask.installed?
  rescue CaskUnavailableError
    next # Ignore conflicting Casks that do not exist.
  end
end

#collect_cask_and_formula_dependencies ⇒ Object

Raises:



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# File 'brew/Library/Homebrew/cask/installer.rb', line 309

def collect_cask_and_formula_dependencies
  return @cask_and_formula_dependencies if @cask_and_formula_dependencies

  graph = graph_dependencies(@cask)

  raise CaskSelfReferencingDependencyError, cask.token if graph[@cask].include?(@cask)

  primary_container.dependencies.each do |dep|
    graph_dependencies(dep, graph)
  end

  begin
    @cask_and_formula_dependencies = graph.tsort - [@cask]
  rescue TSort::Cyclic
    strongly_connected_components = graph.strongly_connected_components.sort_by(&:count)
    cyclic_dependencies = strongly_connected_components.last - [@cask]
    raise CaskCyclicDependencyError.new(@cask.token, cyclic_dependencies.to_sentence)
  end
end

#download ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 148

def download
  return @downloaded_path if @downloaded_path

  odebug "Downloading"
  @downloaded_path = Download.new(@cask, force: false, quarantine: quarantine?).perform
  odebug "Downloaded to -> #{@downloaded_path}"
  @downloaded_path
end

#extract_primary_container ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 175

def extract_primary_container
  odebug "Extracting primary container"

  odebug "Using container class #{primary_container.class} for #{@downloaded_path}"

  basename = CGI.unescape(File.basename(@cask.url.path))

  if nested_container = @cask.container&.nested
    Dir.mktmpdir do |tmpdir|
      tmpdir = Pathname(tmpdir)
      primary_container.extract(to: tmpdir, basename: basename, verbose: verbose?)

      FileUtils.chmod_R "+rw", tmpdir/nested_container, force: true, verbose: verbose?

      UnpackStrategy.detect(tmpdir/nested_container, merge_xattrs: true)
                    .extract_nestedly(to: @cask.staged_path, verbose: verbose?)
    end
  else
    primary_container.extract_nestedly(to: @cask.staged_path, basename: basename, verbose: verbose?)
  end

  return unless quarantine?
  return unless Quarantine.available?

  Quarantine.propagate(from: @downloaded_path, to: @cask.staged_path)
end

#fetch ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 58

def fetch
  odebug "Cask::Installer#fetch"

  verify_has_sha if require_sha? && !force?
  download
  verify

  satisfy_dependencies
end

#finalize_upgrade ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 436

def finalize_upgrade
  ohai "Purging files for version #{@cask.version} of Cask #{@cask}"

  purge_backed_up_versioned_files

  puts summary
end

#gain_permissions_remove(path) ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 494

def gain_permissions_remove(path)
  Utils.gain_permissions_remove(path, command: @command)
end

#graph_dependencies(cask_or_formula, acc = TopologicalHash.new) ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 283

def graph_dependencies(cask_or_formula, acc = TopologicalHash.new)
  return acc if acc.key?(cask_or_formula)

  if cask_or_formula.is_a?(Cask)
    formula_deps = cask_or_formula.depends_on.formula.map { |f| Formula[f] }
    cask_deps = cask_or_formula.depends_on.cask.map(&CaskLoader.public_method(:load))
  else
    formula_deps = cask_or_formula.deps.reject(&:build?).map(&:to_formula)
    cask_deps = cask_or_formula.requirements.map(&:cask).compact.map(&CaskLoader.public_method(:load))
  end

  acc[cask_or_formula] ||= []
  acc[cask_or_formula] += formula_deps
  acc[cask_or_formula] += cask_deps

  formula_deps.each do |f|
    graph_dependencies(f, acc)
  end

  cask_deps.each do |c|
    graph_dependencies(c, acc)
  end

  acc
end

#install ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 80

def install
  odebug "Cask::Installer#install"

  old_config = @cask.config

  raise CaskAlreadyInstalledError, @cask if @cask.installed? && !force? && !reinstall? && !upgrade?

  check_conflicts

  print caveats
  fetch
  uninstall_existing_cask if reinstall?

  backup if force? && @cask.staged_path.exist? && @cask.metadata_versioned_path.exist?

  oh1 "Installing Cask #{Formatter.identifier(@cask)}"
  opoo "macOS's Gatekeeper has been disabled for this Cask" unless quarantine?
  stage

  @cask.config = Config.global.merge(old_config)

  install_artifacts

  ::Utils::Analytics.report_event("cask_install", @cask.token) unless @cask.tap&.private?

  purge_backed_up_versioned_files

  puts summary
rescue
  restore_backup
  raise
end

#install_artifacts ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 202

def install_artifacts
  already_installed_artifacts = []

  odebug "Installing artifacts"
  artifacts = @cask.artifacts
  odebug "#{artifacts.length} artifact/s defined", artifacts

  artifacts.each do |artifact|
    next unless artifact.respond_to?(:install_phase)

    odebug "Installing artifact of class #{artifact.class}"

    if artifact.is_a?(Artifact::Binary)
      next unless binaries?
    end

    artifact.install_phase(command: @command, verbose: verbose?, force: force?)
    already_installed_artifacts.unshift(artifact)
  end

  save_config_file
rescue => e
  begin
    already_installed_artifacts.each do |artifact|
      next unless artifact.respond_to?(:uninstall_phase)

      odebug "Reverting installation of artifact of class #{artifact.class}"
      artifact.uninstall_phase(command: @command, verbose: verbose?, force: force?)
    end

    already_installed_artifacts.each do |artifact|
      next unless artifact.respond_to?(:post_uninstall_phase)

      odebug "Reverting installation of artifact of class #{artifact.class}"
      artifact.post_uninstall_phase(command: @command, verbose: verbose?, force: force?)
    end
  ensure
    purge_versioned_files
    raise e
  end
end

#macos_dependencies ⇒ Object

Raises:



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# File 'brew/Library/Homebrew/cask/installer.rb', line 256

def macos_dependencies
  return unless @cask.depends_on.macos
  return if @cask.depends_on.macos.satisfied?

  raise CaskError, @cask.depends_on.macos.message(type: :cask)
end

#missing_cask_and_formula_dependencies ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 329

def missing_cask_and_formula_dependencies
  collect_cask_and_formula_dependencies.reject do |cask_or_formula|
    (cask_or_formula.respond_to?(:installed?) && cask_or_formula.installed?) ||
      (cask_or_formula.respond_to?(:any_version_installed?) && cask_or_formula.any_version_installed?)
  end
end

#primary_container ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 168

def primary_container
  @primary_container ||= begin
    download
    UnpackStrategy.detect(@downloaded_path, type: @cask.container&.type, merge_xattrs: true)
  end
end

#purge_backed_up_versioned_files ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 498

def purge_backed_up_versioned_files  # versioned staged distribution

  gain_permissions_remove(backup_path) if backup_path&.exist?

  # Homebrew Cask metadata
  return unless backup_metadata_path.directory?

  backup_metadata_path.children.each do |subdir|
    gain_permissions_remove(subdir)
  end
  backup_metadata_path.rmdir_if_possible
end

#purge_caskroom_path ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 531

def purge_caskroom_path
  odebug "Purging all staged versions of Cask #{@cask}"
  gain_permissions_remove(@cask.caskroom_path)
end

#purge_versioned_files ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 511

def purge_versioned_files
  ohai "Purging files for version #{@cask.version} of Cask #{@cask}"

  # versioned staged distribution
  gain_permissions_remove(@cask.staged_path) if @cask.staged_path&.exist?

  # Homebrew Cask metadata
  if @cask.metadata_versioned_path.directory?
    @cask.metadata_versioned_path.children.each do |subdir|
      gain_permissions_remove(subdir)
    end

    @cask.metadata_versioned_path.rmdir_if_possible
  end
  @cask.metadata_master_container_path.rmdir_if_possible unless upgrade?

  # toplevel staged distribution
  @cask.caskroom_path.rmdir_if_possible unless upgrade?
end

#reinstall ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 124

def reinstall
  odebug "Cask::Installer#reinstall"
  @reinstall = true
  install
end

#remove_config_file ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 405

def remove_config_file
  FileUtils.rm_f @cask.config_path
  @cask.config_path.parent.rmdir_if_possible
end

#restore_backup ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 420

def restore_backup
  return unless backup_path.directory? && backup_metadata_path.directory?

  Pathname.new(@cask.staged_path).rmtree if @cask.staged_path.exist?
  Pathname.new(@cask.metadata_versioned_path).rmtree if @cask.metadata_versioned_path.exist?

  backup_path.rename @cask.staged_path
  backup_metadata_path.rename @cask.metadata_versioned_path
end

#revert_upgrade ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 430

def revert_upgrade
  opoo "Reverting upgrade for Cask #{@cask}"
  restore_backup
  install_artifacts
end

#satisfy_dependencies ⇒ Object

TODO: move dependencies to a separate class, dependencies should also apply for brew cask stage, override dependencies with --force or perhaps --force-deps



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# File 'brew/Library/Homebrew/cask/installer.rb', line 247

def satisfy_dependencies
  return unless @cask.depends_on

  macos_dependencies
  arch_dependencies
  x11_dependencies
  cask_and_formula_dependencies
end

#save_caskfile ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 383

def save_caskfile
  old_savedir = @cask.metadata_timestamped_path

  return unless @cask.sourcefile_path

  savedir = @cask.metadata_subdir("Casks", timestamp: :now, create: true)
  FileUtils.copy @cask.sourcefile_path, savedir
  old_savedir&.rmtree
end

#save_config_file ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 393

def save_config_file
  @cask.config_path.atomic_write(@cask.config.to_json)
end

#stage ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 68

def stage
  odebug "Cask::Installer#stage"

  Caskroom.ensure_caskroom_exists

  extract_primary_container
  save_caskfile
rescue => e
  purge_versioned_files
  raise e
end

#start_upgrade ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 410

def start_upgrade
  uninstall_artifacts
  backup
end

#summary ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 141

def summary
  s = +""
  s << "#{Emoji.install_badge}  " if Emoji.enabled?
  s << "#{@cask} was successfully #{upgrade? ? "upgraded" : "installed"}!"
  s.freeze
end

#uninstall ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 397

def uninstall
  oh1 "Uninstalling Cask #{Formatter.identifier(@cask)}"
  uninstall_artifacts(clear: true)
  remove_config_file unless reinstall? || upgrade?
  purge_versioned_files
  purge_caskroom_path if force?
end

#uninstall_artifacts(clear: false) ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 444

def uninstall_artifacts(clear: false)
  odebug "Uninstalling artifacts"
  artifacts = @cask.artifacts

  odebug "#{artifacts.length} artifact/s defined", artifacts

  artifacts.each do |artifact|
    next unless artifact.respond_to?(:uninstall_phase)

    odebug "Uninstalling artifact of class #{artifact.class}"
    artifact.uninstall_phase(command: @command, verbose: verbose?, skip: clear, force: force?, upgrade: upgrade?)
  end

  artifacts.each do |artifact|
    next unless artifact.respond_to?(:post_uninstall_phase)

    odebug "Post-uninstalling artifact of class #{artifact.class}"
    artifact.post_uninstall_phase(
      command: @command, verbose: verbose?, skip: clear, force: force?, upgrade: upgrade?,
    )
  end
end

#uninstall_existing_cask ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 130

def uninstall_existing_cask
  return unless @cask.installed?

  # use the same cask file that was used for installation, if possible
  installed_caskfile = @cask.installed_caskfile
  installed_cask = installed_caskfile.exist? ? CaskLoader.load(installed_caskfile) : @cask

  # Always force uninstallation, ignore method parameter
  Installer.new(installed_cask, binaries: binaries?, verbose: verbose?, force: true, upgrade: upgrade?).uninstall
end

#verify ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 164

def verify
  Verify.all(@cask, @downloaded_path)
end

#verify_has_sha ⇒ Object

Raises:



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# File 'brew/Library/Homebrew/cask/installer.rb', line 157

def verify_has_sha
  odebug "Checking cask has checksum"
  return unless @cask.sha256 == :no_check

  raise CaskNoShasumError, @cask.token
end

#x11_dependencies ⇒ Object

Raises:



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# File 'brew/Library/Homebrew/cask/installer.rb', line 278

def x11_dependencies
  return unless @cask.depends_on.x11
  raise CaskX11DependencyError, @cask.token unless MacOS::X11.installed?
end

#zap ⇒ Object 



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# File 'brew/Library/Homebrew/cask/installer.rb', line 467

def zap
  ohai %Q(Implied "brew cask uninstall #{@cask}")
  uninstall_artifacts
  if (zap_stanzas = @cask.artifacts.select { |a| a.is_a?(Artifact::Zap) }).empty?
    opoo "No zap stanza present for Cask '#{@cask}'"
  else
    ohai "Dispatching zap stanza"
    zap_stanzas.each do |stanza|
      stanza.zap_phase(command: @command, verbose: verbose?, force: force?)
    end
  end
  ohai "Removing all staged versions of Cask '#{@cask}'"
  purge_caskroom_path
end