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authorJari Vetoniemi <jari.vetoniemi@indooratlas.com>2020-03-16 18:49:26 +0900
committerJari Vetoniemi <jari.vetoniemi@indooratlas.com>2020-03-30 00:39:06 +0900
commitfcbf63e62c627deae76c1b8cb8c0876c536ed811 (patch)
tree64cb17de3f41a2b6fef2368028fbd00349946994 /jni/ruby/lib/rubygems/validator.rb
Fresh start
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diff --git a/jni/ruby/lib/rubygems/validator.rb b/jni/ruby/lib/rubygems/validator.rb
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+#--
+# Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
+# All rights reserved.
+# See LICENSE.txt for permissions.
+#++
+
+require 'rubygems/package'
+require 'rubygems/installer'
+
+##
+# Validator performs various gem file and gem database validation
+
+class Gem::Validator
+
+ include Gem::UserInteraction
+
+ def initialize # :nodoc:
+ require 'find'
+ end
+
+ ##
+ # Given a gem file's contents, validates against its own MD5 checksum
+ # gem_data:: [String] Contents of the gem file
+
+ def verify_gem(gem_data)
+ # TODO remove me? The code here only validate an MD5SUM that was
+ # in some old formatted gems, but hasn't been for a long time.
+ end
+
+ ##
+ # Given the path to a gem file, validates against its own MD5 checksum
+ #
+ # gem_path:: [String] Path to gem file
+
+ def verify_gem_file(gem_path)
+ open gem_path, Gem.binary_mode do |file|
+ gem_data = file.read
+ verify_gem gem_data
+ end
+ rescue Errno::ENOENT, Errno::EINVAL
+ raise Gem::VerificationError, "missing gem file #{gem_path}"
+ end
+
+ private
+
+ 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(/^\//, "")
+ installed_files << fn unless
+ fn =~ /CVS/ || fn.empty? || File.directory?(file_name)
+ end
+
+ installed_files
+ end
+
+ public
+
+ ##
+ # Describes a problem with a file in a gem.
+
+ ErrorData = Struct.new :path, :problem do
+ def <=> other # :nodoc:
+ return nil unless self.class === other
+
+ [path, problem] <=> [other.path, other.problem]
+ end
+ end
+
+ ##
+ # Checks the gem directory for the following potential
+ # inconsistencies/problems:
+ #
+ # * Checksum gem itself
+ # * For each file in each gem, check consistency of installed versions
+ # * Check for files that aren't part of the gem but are in the gems directory
+ # * 1 cache - 1 spec - 1 directory.
+ #
+ # returns a hash of ErrorData objects, keyed on the problem gem's name.
+ #--
+ # TODO needs further cleanup
+
+ def alien(gems=[])
+ errors = Hash.new { |h,k| h[k] = {} }
+
+ Gem::Specification.each do |spec|
+ next unless gems.include? spec.name unless gems.empty?
+ 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 then
+ errors[gem_name][spec.full_name] =
+ "Gem registered but doesn't exist at #{gem_directory}"
+ next
+ end
+
+ unless File.exist? spec_path then
+ errors[gem_name][spec_path] = "Spec file missing for installed gem"
+ end
+
+ begin
+ verify_gem_file(gem_path)
+
+ good, gone, unreadable = nil, nil, nil, nil
+
+ open gem_path, Gem.binary_mode do |file|
+ package = Gem::Package.new gem_path
+
+ good, gone = package.contents.partition { |file_name|
+ File.exist? File.join(gem_directory, file_name)
+ }
+
+ gone.sort.each do |path|
+ errors[gem_name][path] = "Missing file"
+ end
+
+ good, unreadable = good.partition { |file_name|
+ File.readable? File.join(gem_directory, file_name)
+ }
+
+ unreadable.sort.each do |path|
+ errors[gem_name][path] = "Unreadable file"
+ end
+
+ good.each do |entry, data|
+ begin
+ next unless data # HACK `gem check -a mkrf`
+
+ source = File.join gem_directory, entry['path']
+
+ open source, Gem.binary_mode do |f|
+ unless f.read == data then
+ errors[gem_name][entry['path']] = "Modified from original"
+ end
+ 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
+end
+