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# frozen_string_literal: true #-- # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others. # All rights reserved. # See LICENSE.txt for permissions. #++ require_relative "installer_uninstaller_utils" require_relative "exceptions" require_relative "deprecate" require_relative "package" require_relative "ext" require_relative "user_interaction" ## # The installer installs the files contained in the .gem into the Gem.home. # # Gem::Installer does the work of putting files in all the right places on the # filesystem including unpacking the gem into its gem dir, installing the # gemspec in the specifications dir, storing the cached gem in the cache dir, # and installing either wrappers or symlinks for executables. # # The installer invokes pre and post install hooks. Hooks can be added either # through a rubygems_plugin.rb file in an installed gem or via a # rubygems/defaults/#{RUBY_ENGINE}.rb or rubygems/defaults/operating_system.rb # file. See Gem.pre_install and Gem.post_install for details. class Gem::Installer extend Gem::Deprecate ## # Paths where env(1) might live. Some systems are broken and have it in # /bin ENV_PATHS = %w[/usr/bin/env /bin/env].freeze ## # Deprecated in favor of Gem::Ext::BuildError ExtensionBuildError = Gem::Ext::BuildError # :nodoc: include Gem::UserInteraction include Gem::InstallerUninstallerUtils ## # The directory a gem's executables will be installed into attr_reader :bin_dir attr_reader :build_root # :nodoc: ## # The gem repository the gem will be installed into attr_reader :gem_home ## # The options passed when the Gem::Installer was instantiated. attr_reader :options ## # The gem package instance. attr_reader :package @path_warning = false class << self # # Changes in rubygems to lazily loading `rubygems/command` (in order to # lazily load `optparse` as a side effect) affect bundler's custom installer # which uses `Gem::Command` without requiring it (up until bundler 2.2.29). # This hook is to compensate for that missing require. # # TODO: Remove when rubygems no longer supports running on bundler older # than 2.2.29. def inherited(klass) if klass.name == "Bundler::RubyGemsGemInstaller" require "rubygems/command" end super(klass) end ## # True if we've warned about PATH not including Gem.bindir attr_accessor :path_warning ## # Overrides the executable format. # # This is a sprintf format with a "%s" which will be replaced with the # executable name. It is based off the ruby executable name's difference # from "ruby". attr_writer :exec_format # Defaults to use Ruby's program prefix and suffix. def exec_format @exec_format ||= Gem.default_exec_format end end ## # Construct an installer object for the gem file located at +path+ def self.at(path, options = {}) security_policy = options[:security_policy] package = Gem::Package.new path, security_policy new package, options end class FakePackage attr_accessor :spec attr_accessor :dir_mode attr_accessor :prog_mode attr_accessor :data_mode def initialize(spec) @spec = spec end def extract_files(destination_dir, pattern = "*") FileUtils.mkdir_p destination_dir spec.files.each do |file| file = File.join destination_dir, file next if File.exist? file FileUtils.mkdir_p File.dirname(file) File.open file, "w" do |fp| fp.puts "# #{file}" end end end def copy_to(path) end end ## # Construct an installer object for an ephemeral gem (one where we don't # actually have a .gem file, just a spec) def self.for_spec(spec, options = {}) # FIXME: we should have a real Package class for this new FakePackage.new(spec), options end ## # Constructs an Installer instance that will install the gem at +package+ which # can either be a path or an instance of Gem::Package. +options+ is a Hash # with the following keys: # # :bin_dir:: Where to put a bin wrapper if needed. # :development:: Whether or not development dependencies should be installed. # :env_shebang:: Use /usr/bin/env in bin wrappers. # :force:: Overrides all version checks and security policy checks, except # for a signed-gems-only policy. # :format_executable:: Format the executable the same as the Ruby executable. # If your Ruby is ruby18, foo_exec will be installed as # foo_exec18. # :ignore_dependencies:: Don't raise if a dependency is missing. # :install_dir:: The directory to install the gem into. # :security_policy:: Use the specified security policy. See Gem::Security # :user_install:: Indicate that the gem should be unpacked into the users # personal gem directory. # :only_install_dir:: Only validate dependencies against what is in the # install_dir # :wrappers:: Install wrappers if true, symlinks if false. # :build_args:: An Array of arguments to pass to the extension builder # process. If not set, then Gem::Command.build_args is used # :post_install_message:: Print gem post install message if true def initialize(package, options={}) require "fileutils" @options = options @package = package process_options @package.dir_mode = options[:dir_mode] @package.prog_mode = options[:prog_mode] @package.data_mode = options[:data_mode] if options[:user_install] @gem_home = Gem.user_dir @bin_dir = Gem.bindir gem_home unless options[:bin_dir] @plugins_dir = Gem.plugindir(gem_home) check_that_user_bin_dir_is_in_path end end ## # Checks if +filename+ exists in +@bin_dir+. # # If +@force+ is set +filename+ is overwritten. # # If +filename+ exists and it is a RubyGems wrapper for a different gem, then # the user is consulted. # # If +filename+ exists and +@bin_dir+ is Gem.default_bindir (/usr/local) the # user is consulted. # # Otherwise +filename+ is overwritten. def check_executable_overwrite(filename) # :nodoc: return if @force generated_bin = File.join @bin_dir, formatted_program_filename(filename) return unless File.exist? generated_bin ruby_executable = false existing = nil File.open generated_bin, "rb" do |io| line = io.gets shebang = /^#!.*ruby/ if load_relative_enabled? until line.nil? || line =~ shebang do line = io.gets end end next unless line =~ shebang io.gets # blankline # TODO detect a specially formatted comment instead of trying # to run a regexp against Ruby code. next unless io.gets =~ /This file was generated by RubyGems/ ruby_executable = true existing = io.read.slice(%r{ ^\s*( gem \s | load \s Gem\.bin_path\( | load \s Gem\.activate_bin_path\( ) (['"])(.*?)(\2), }x, 3) end return if spec.name == existing # somebody has written to RubyGems' directory, overwrite, too bad return if Gem.default_bindir != @bin_dir && !ruby_executable question = "#{spec.name}'s executable \"#{filename}\" conflicts with ".dup if ruby_executable question << (existing || "an unknown executable") return if ask_yes_no "#{question}\nOverwrite the executable?", false conflict = "installed executable from #{existing}" else question << generated_bin return if ask_yes_no "#{question}\nOverwrite the executable?", false conflict = generated_bin end raise Gem::InstallError, "\"#{filename}\" from #{spec.name} conflicts with #{conflict}" end ## # Lazy accessor for the spec's gem directory. def gem_dir @gem_dir ||= File.join(gem_home, "gems", spec.full_name) end ## # Lazy accessor for the installer's spec. def spec @package.spec end ## # Installs the gem and returns a loaded Gem::Specification for the installed # gem. # # The gem will be installed with the following structure: # # @gem_home/ # cache/<gem-version>.gem #=> a cached copy of the installed gem # gems/<gem-version>/... #=> extracted files # specifications/<gem-version>.gemspec #=> the Gem::Specification def install pre_install_checks run_pre_install_hooks # Set loaded_from to ensure extension_dir is correct if @options[:install_as_default] spec.loaded_from = default_spec_file else spec.loaded_from = spec_file end # Completely remove any previous gem files FileUtils.rm_rf gem_dir FileUtils.rm_rf spec.extension_dir dir_mode = options[:dir_mode] FileUtils.mkdir_p gem_dir, :mode => dir_mode && 0755 if @options[:install_as_default] extract_bin write_default_spec else extract_files build_extensions write_build_info_file run_post_build_hooks end generate_bin generate_plugins unless @options[:install_as_default] write_spec write_cache_file end File.chmod(dir_mode, gem_dir) if dir_mode say spec.post_install_message if options[:post_install_message] && !spec.post_install_message.nil? Gem::Specification.add_spec(spec) run_post_install_hooks spec # TODO This rescue is in the wrong place. What is raising this exception? # move this rescue to around the code that actually might raise it. rescue Zlib::GzipFile::Error raise Gem::InstallError, "gzip error installing #{gem}" end def run_pre_install_hooks # :nodoc: Gem.pre_install_hooks.each do |hook| if hook.call(self) == false location = " at #{$1}" if hook.inspect =~ /[ @](.*:\d+)/ message = "pre-install hook#{location} failed for #{spec.full_name}" raise Gem::InstallError, message end end end def run_post_build_hooks # :nodoc: Gem.post_build_hooks.each do |hook| if hook.call(self) == false FileUtils.rm_rf gem_dir location = " at #{$1}" if hook.inspect =~ /[ @](.*:\d+)/ message = "post-build hook#{location} failed for #{spec.full_name}" raise Gem::InstallError, message end end end def run_post_install_hooks # :nodoc: Gem.post_install_hooks.each do |hook| hook.call self end end ## # # Return an Array of Specifications contained within the gem_home # we'll be installing into. def installed_specs @specs ||= begin specs = [] Gem::Util.glob_files_in_dir("*.gemspec", File.join(gem_home, "specifications")).each do |path| spec = Gem::Specification.load path.tap(&Gem::UNTAINT) specs << spec if spec end specs end end ## # Ensure that the dependency is satisfied by the current installation of # gem. If it is not an exception is raised. # # spec :: Gem::Specification # dependency :: Gem::Dependency def ensure_dependency(spec, dependency) unless installation_satisfies_dependency? dependency raise Gem::InstallError, "#{spec.name} requires #{dependency}" end true end ## # True if the gems in the system satisfy +dependency+. def installation_satisfies_dependency?(dependency) return true if @options[:development] && dependency.type == :development return true if installed_specs.detect {|s| dependency.matches_spec? s } return false if @only_install_dir !dependency.matching_specs.empty? end ## # Unpacks the gem into the given directory. def unpack(directory) @gem_dir = directory extract_files end rubygems_deprecate :unpack ## # The location of the spec file that is installed. # def spec_file File.join gem_home, "specifications", "#{spec.full_name}.gemspec" end ## # The location of the default spec file for default gems. # def default_spec_file File.join gem_home, "specifications", "default", "#{spec.full_name}.gemspec" end ## # Writes the .gemspec specification (in Ruby) to the gem home's # specifications directory. def write_spec spec.installed_by_version = Gem.rubygems_version Gem.write_binary(spec_file, spec.to_ruby_for_cache) end ## # Writes the full .gemspec specification (in Ruby) to the gem home's # specifications/default directory. def write_default_spec Gem.write_binary(default_spec_file, spec.to_ruby) end ## # Creates windows .bat files for easy running of commands def generate_windows_script(filename, bindir) if Gem.win_platform? script_name = formatted_program_filename(filename) + ".bat" script_path = File.join bindir, File.basename(script_name) File.open script_path, "w" do |file| file.puts windows_stub_script(bindir, filename) end verbose script_path end end def generate_bin # :nodoc: return if spec.executables.nil? || spec.executables.empty? ensure_writable_dir @bin_dir spec.executables.each do |filename| filename.tap(&Gem::UNTAINT) bin_path = File.join gem_dir, spec.bindir, filename next unless File.exist? bin_path mode = File.stat(bin_path).mode dir_mode = options[:prog_mode] || (mode | 0111) unless dir_mode == mode require "fileutils" FileUtils.chmod dir_mode, bin_path end check_executable_overwrite filename if @wrappers generate_bin_script filename, @bin_dir else generate_bin_symlink filename, @bin_dir end end end def generate_plugins # :nodoc: latest = Gem::Specification.latest_spec_for(spec.name) return if latest && latest.version > spec.version ensure_writable_dir @plugins_dir if spec.plugins.empty? remove_plugins_for(spec, @plugins_dir) else regenerate_plugins_for(spec, @plugins_dir) end end ## # Creates the scripts to run the applications in the gem. #-- # The Windows script is generated in addition to the regular one due to a # bug or misfeature in the Windows shell's pipe. See # http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/193379 def generate_bin_script(filename, bindir) bin_script_path = File.join bindir, formatted_program_filename(filename) require "fileutils" FileUtils.rm_f bin_script_path # prior install may have been --no-wrappers File.open bin_script_path, "wb", 0755 do |file| file.print app_script_text(filename) file.chmod(options[:prog_mode] || 0755) end verbose bin_script_path generate_windows_script filename, bindir end ## # Creates the symlinks to run the applications in the gem. Moves # the symlink if the gem being installed has a newer version. def generate_bin_symlink(filename, bindir) src = File.join gem_dir, spec.bindir, filename dst = File.join bindir, formatted_program_filename(filename) if File.exist? dst if File.symlink? dst link = File.readlink(dst).split File::SEPARATOR cur_version = Gem::Version.create(link[-3].sub(/^.*-/, "")) return if spec.version < cur_version end File.unlink dst end FileUtils.symlink src, dst, :verbose => Gem.configuration.really_verbose rescue NotImplementedError, SystemCallError alert_warning "Unable to use symlinks, installing wrapper" generate_bin_script filename, bindir end ## # Generates a #! line for +bin_file_name+'s wrapper copying arguments if # necessary. # # If the :custom_shebang config is set, then it is used as a template # for how to create the shebang used for to run a gem's executables. # # The template supports 4 expansions: # # $env the path to the unix env utility # $ruby the path to the currently running ruby interpreter # $exec the path to the gem's executable # $name the name of the gem the executable is for # def shebang(bin_file_name) path = File.join gem_dir, spec.bindir, bin_file_name first_line = File.open(path, "rb") {|file| file.gets } || "" if first_line.start_with?("#!") # Preserve extra words on shebang line, like "-w". Thanks RPA. shebang = first_line.sub(/\A\#!.*?ruby\S*((\s+\S+)+)/, "#!#{Gem.ruby}") opts = $1 shebang.strip! # Avoid nasty ^M issues. end if which = Gem.configuration[:custom_shebang] # replace bin_file_name with "ruby" to avoid endless loops which = which.gsub(/ #{bin_file_name}$/," #{ruby_install_name}") which = which.gsub(/\$(\w+)/) do case $1 when "env" @env_path ||= ENV_PATHS.find {|env_path| File.executable? env_path } when "ruby" "#{Gem.ruby}#{opts}" when "exec" bin_file_name when "name" spec.name end end "#!#{which}" elsif @env_shebang # Create a plain shebang line. @env_path ||= ENV_PATHS.find {|env_path| File.executable? env_path } "#!#{@env_path} #{ruby_install_name}" else "#{bash_prolog_script}#!#{Gem.ruby}#{opts}" end end ## # Ensures the Gem::Specification written out for this gem is loadable upon # installation. def ensure_loadable_spec ruby = spec.to_ruby_for_cache ruby.tap(&Gem::UNTAINT) begin eval ruby rescue StandardError, SyntaxError => e raise Gem::InstallError, "The specification for #{spec.full_name} is corrupt (#{e.class})" end end def ensure_dependencies_met # :nodoc: deps = spec.runtime_dependencies deps |= spec.development_dependencies if @development deps.each do |dep_gem| ensure_dependency spec, dep_gem end end def process_options # :nodoc: @options = { :bin_dir => nil, :env_shebang => false, :force => false, :only_install_dir => false, :post_install_message => true, }.merge options @env_shebang = options[:env_shebang] @force = options[:force] @install_dir = options[:install_dir] @gem_home = options[:install_dir] || Gem.dir @plugins_dir = Gem.plugindir(@gem_home) @ignore_dependencies = options[:ignore_dependencies] @format_executable = options[:format_executable] @wrappers = options[:wrappers] @only_install_dir = options[:only_install_dir] # If the user has asked for the gem to be installed in a directory that is # the system gem directory, then use the system bin directory, else create # (or use) a new bin dir under the gem_home. @bin_dir = options[:bin_dir] || Gem.bindir(gem_home) @development = options[:development] @build_root = options[:build_root] @build_args = options[:build_args] unless @build_root.nil? @bin_dir = File.join(@build_root, @bin_dir.gsub(/^[a-zA-Z]:/, "")) @gem_home = File.join(@build_root, @gem_home.gsub(/^[a-zA-Z]:/, "")) @plugins_dir = File.join(@build_root, @plugins_dir.gsub(/^[a-zA-Z]:/, "")) alert_warning "You build with buildroot.\n Build root: #{@build_root}\n Bin dir: #{@bin_dir}\n Gem home: #{@gem_home}\n Plugins dir: #{@plugins_dir}" end end def check_that_user_bin_dir_is_in_path # :nodoc: return if self.class.path_warning user_bin_dir = @bin_dir || Gem.bindir(gem_home) user_bin_dir = user_bin_dir.tr(File::ALT_SEPARATOR, File::SEPARATOR) if File::ALT_SEPARATOR path = ENV["PATH"] path = path.tr(File::ALT_SEPARATOR, File::SEPARATOR) if File::ALT_SEPARATOR if Gem.win_platform? path = path.downcase user_bin_dir = user_bin_dir.downcase end path = path.split(File::PATH_SEPARATOR) unless path.include? user_bin_dir unless !Gem.win_platform? && (path.include? user_bin_dir.sub(ENV["HOME"], "~")) alert_warning "You don't have #{user_bin_dir} in your PATH,\n\t gem executables will not run." self.class.path_warning = true end end end def verify_gem_home # :nodoc: FileUtils.mkdir_p gem_home, :mode => options[:dir_mode] && 0755 raise Gem::FilePermissionError, gem_home unless File.writable?(gem_home) end def verify_spec unless spec.name =~ Gem::Specification::VALID_NAME_PATTERN raise Gem::InstallError, "#{spec} has an invalid name" end if spec.raw_require_paths.any? {|path| path =~ /\R/ } raise Gem::InstallError, "#{spec} has an invalid require_paths" end if spec.extensions.any? {|ext| ext =~ /\R/ } raise Gem::InstallError, "#{spec} has an invalid extensions" end if spec.platform.to_s =~ /\R/ raise Gem::InstallError, "#{spec.platform} is an invalid platform" end unless spec.specification_version.to_s =~ /\A\d+\z/ raise Gem::InstallError, "#{spec} has an invalid specification_version" end if spec.dependencies.any? {|dep| dep.type != :runtime && dep.type != :development } raise Gem::InstallError, "#{spec} has an invalid dependencies" end if spec.dependencies.any? {|dep| dep.name =~ /(?:\R|[<>])/ } raise Gem::InstallError, "#{spec} has an invalid dependencies" end end ## # Return the text for an application file. def app_script_text(bin_file_name) # note that the `load` lines cannot be indented, as old RG versions match # against the beginning of the line return <<-TEXT #{shebang bin_file_name} # # This file was generated by RubyGems. # # The application '#{spec.name}' is installed as part of a gem, and # this file is here to facilitate running it. # require 'rubygems' #{gemdeps_load(spec.name)} version = "#{Gem::Requirement.default_prerelease}" str = ARGV.first if str str = str.b[/\\A_(.*)_\\z/, 1] if str and Gem::Version.correct?(str) #{explicit_version_requirement(spec.name)} ARGV.shift end end if Gem.respond_to?(:activate_bin_path) load Gem.activate_bin_path('#{spec.name}', '#{bin_file_name}', version) else gem #{spec.name.dump}, version load Gem.bin_path(#{spec.name.dump}, #{bin_file_name.dump}, version) end TEXT end def gemdeps_load(name) return "" if name == "bundler" <<-TEXT Gem.use_gemdeps TEXT end def explicit_version_requirement(name) code = "version = str" return code unless name == "bundler" code += <<-TEXT ENV['BUNDLER_VERSION'] = str TEXT end ## # return the stub script text used to launch the true Ruby script def windows_stub_script(bindir, bin_file_name) rb_topdir = RbConfig::TOPDIR || File.dirname(rb_config["bindir"]) # get ruby executable file name from RbConfig ruby_exe = "#{rb_config['RUBY_INSTALL_NAME']}#{rb_config['EXEEXT']}" ruby_exe = "ruby.exe" if ruby_exe.empty? if File.exist?(File.join bindir, ruby_exe) # stub & ruby.exe within same folder. Portable <<-TEXT @ECHO OFF @"%~dp0#{ruby_exe}" "%~dpn0" %* TEXT elsif bindir.downcase.start_with? rb_topdir.downcase # stub within ruby folder, but not standard bin. Portable require "pathname" from = Pathname.new bindir to = Pathname.new "#{rb_topdir}/bin" rel = to.relative_path_from from <<-TEXT @ECHO OFF @"%~dp0#{rel}/#{ruby_exe}" "%~dpn0" %* TEXT else # outside ruby folder, maybe -user-install or bundler. Portable, but ruby # is dependent on PATH <<-TEXT @ECHO OFF @#{ruby_exe} "%~dpn0" %* TEXT end end ## # Builds extensions. Valid types of extensions are extconf.rb files, # configure scripts and rakefiles or mkrf_conf files. def build_extensions builder = Gem::Ext::Builder.new spec, build_args builder.build_extensions end ## # Reads the file index and extracts each file into the gem directory. # # Ensures that files can't be installed outside the gem directory. def extract_files @package.extract_files gem_dir end ## # Extracts only the bin/ files from the gem into the gem directory. # This is used by default gems to allow a gem-aware stub to function # without the full gem installed. def extract_bin @package.extract_files gem_dir, "#{spec.bindir}/*" end ## # Prefix and suffix the program filename the same as ruby. def formatted_program_filename(filename) if @format_executable self.class.exec_format % File.basename(filename) else filename end end ## # # Return the target directory where the gem is to be installed. This # directory is not guaranteed to be populated. # def dir gem_dir.to_s end ## # Filename of the gem being installed. def gem @package.gem.path end ## # Performs various checks before installing the gem such as the install # repository is writable and its directories exist, required Ruby and # rubygems versions are met and that dependencies are installed. # # Version and dependency checks are skipped if this install is forced. # # The dependent check will be skipped if the install is ignoring dependencies. def pre_install_checks verify_gem_home # The name and require_paths must be verified first, since it could contain # ruby code that would be eval'ed in #ensure_loadable_spec verify_spec ensure_loadable_spec if options[:install_as_default] Gem.ensure_default_gem_subdirectories gem_home else Gem.ensure_gem_subdirectories gem_home end return true if @force ensure_dependencies_met unless @ignore_dependencies true end ## # Writes the file containing the arguments for building this gem's # extensions. def write_build_info_file return if build_args.empty? build_info_dir = File.join gem_home, "build_info" dir_mode = options[:dir_mode] FileUtils.mkdir_p build_info_dir, :mode => dir_mode && 0755 build_info_file = File.join build_info_dir, "#{spec.full_name}.info" File.open build_info_file, "w" do |io| build_args.each do |arg| io.puts arg end end File.chmod(dir_mode, build_info_dir) if dir_mode end ## # Writes the .gem file to the cache directory def write_cache_file cache_file = File.join gem_home, "cache", spec.file_name @package.copy_to cache_file end def ensure_writable_dir(dir) # :nodoc: begin Dir.mkdir dir, *[options[:dir_mode] && 0755].compact rescue SystemCallError raise unless File.directory? dir end raise Gem::FilePermissionError.new(dir) unless File.writable? dir end private def build_args @build_args ||= begin require_relative "command" Gem::Command.build_args end end def rb_config RbConfig::CONFIG end def ruby_install_name rb_config["ruby_install_name"] end def load_relative_enabled? rb_config["LIBRUBY_RELATIVE"] == "yes" end def bash_prolog_script if load_relative_enabled? script = +<<~EOS bindir="${0%/*}" EOS script << %Q(exec "$bindir/#{ruby_install_name}" "-x" "$0" "$@"\n) <<~EOS #!/bin/sh # -*- ruby -*- _=_\\ =begin #{script.chomp} =end EOS else "" end end end