class Gem::Validator
Validator
performs various gem file and gem database validation
Public Instance Methods
alien(gems=[])
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Checks the gem directory for the following potential inconsistencies/problems:
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Checksum gem itself
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For each file in each gem, check consistency of installed versions
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Check for files that aren’t part of the gem but are in the gems directory
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1 cache - 1 spec - 1 directory.
returns a hash of ErrorData objects, keyed on the problem gem’s name.
# File rubygems/validator.rb, line 62 def alien(gems=[]) errors = Hash.new {|h,k| h[k] = {} } Gem::Specification.each do |spec| unless gems.empty? next unless gems.include? spec.name end next if spec.default_gem? gem_name = spec.file_name gem_path = spec.cache_file spec_path = spec.spec_file gem_directory = spec.full_gem_path unless File.directory? gem_directory errors[gem_name][spec.full_name] = "Gem registered but doesn't exist at #{gem_directory}" next end unless File.exist? spec_path errors[gem_name][spec_path] = "Spec file missing for installed gem" end begin unless File.readable?(gem_path) raise Gem::VerificationError, "missing gem file #{gem_path}" end good, gone, unreadable = nil, nil, nil, nil File.open gem_path, Gem.binary_mode do |_file| package = Gem::Package.new gem_path good, gone = package.contents.partition do |file_name| File.exist? File.join(gem_directory, file_name) end gone.sort.each do |path| errors[gem_name][path] = "Missing file" end good, unreadable = good.partition do |file_name| File.readable? File.join(gem_directory, file_name) end unreadable.sort.each do |path| errors[gem_name][path] = "Unreadable file" end good.each do |entry, data| next unless data # HACK: `gem check -a mkrf` source = File.join gem_directory, entry["path"] File.open source, Gem.binary_mode do |f| unless f.read == data errors[gem_name][entry["path"]] = "Modified from original" end end end end installed_files = find_files_for_gem(gem_directory) extras = installed_files - good - unreadable extras.each do |extra| errors[gem_name][extra] = "Extra file" end rescue Gem::VerificationError => e errors[gem_name][gem_path] = e.message end end errors.each do |name, subhash| errors[name] = subhash.map do |path, msg| ErrorData.new path, msg end.sort end errors end
Private Instance Methods
find_files_for_gem(gem_directory)
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# File rubygems/validator.rb, line 24 def find_files_for_gem(gem_directory) installed_files = [] Find.find gem_directory do |file_name| fn = file_name[gem_directory.size..file_name.size - 1].sub(%r{^/}, "") installed_files << fn unless fn.empty? || fn.include?("CVS") || File.directory?(file_name) end installed_files end