100 lines
3.5 KiB
Ruby
100 lines
3.5 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
require "rubygems/installer"
|
|
|
|
module Bundler
|
|
class RubyGemsGemInstaller < Gem::Installer
|
|
unless respond_to?(:at)
|
|
def self.at(*args)
|
|
new(*args)
|
|
end
|
|
end
|
|
|
|
def check_executable_overwrite(filename)
|
|
# Bundler needs to install gems regardless of binstub overwriting
|
|
end
|
|
|
|
def pre_install_checks
|
|
super && validate_bundler_checksum(options[:bundler_expected_checksum])
|
|
end
|
|
|
|
def build_extensions
|
|
extension_cache_path = options[:bundler_extension_cache_path]
|
|
return super unless extension_cache_path && extension_dir = Bundler.rubygems.spec_extension_dir(spec)
|
|
|
|
extension_dir = Pathname.new(extension_dir)
|
|
build_complete = SharedHelpers.filesystem_access(extension_cache_path.join("gem.build_complete"), :read, &:file?)
|
|
if build_complete && !options[:force]
|
|
SharedHelpers.filesystem_access(extension_dir.parent, &:mkpath)
|
|
SharedHelpers.filesystem_access(extension_cache_path) do
|
|
FileUtils.cp_r extension_cache_path, spec.extension_dir
|
|
end
|
|
else
|
|
super
|
|
if extension_dir.directory? # not made for gems without extensions
|
|
SharedHelpers.filesystem_access(extension_cache_path.parent, &:mkpath)
|
|
SharedHelpers.filesystem_access(extension_cache_path) do
|
|
FileUtils.cp_r extension_dir, extension_cache_path
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
private
|
|
|
|
def validate_bundler_checksum(checksum)
|
|
return true if Bundler.settings[:disable_checksum_validation]
|
|
return true unless checksum
|
|
return true unless source = @package.instance_variable_get(:@gem)
|
|
return true unless source.respond_to?(:with_read_io)
|
|
digest = source.with_read_io do |io|
|
|
digest = SharedHelpers.digest(:SHA256).new
|
|
digest << io.read(16_384) until io.eof?
|
|
io.rewind
|
|
send(checksum_type(checksum), digest)
|
|
end
|
|
unless digest == checksum
|
|
raise SecurityError, <<-MESSAGE
|
|
Bundler cannot continue installing #{spec.name} (#{spec.version}).
|
|
The checksum for the downloaded `#{spec.full_name}.gem` does not match \
|
|
the checksum given by the server. This means the contents of the downloaded \
|
|
gem is different from what was uploaded to the server, and could be a potential security issue.
|
|
|
|
To resolve this issue:
|
|
1. delete the downloaded gem located at: `#{spec.gem_dir}/#{spec.full_name}.gem`
|
|
2. run `bundle install`
|
|
|
|
If you wish to continue installing the downloaded gem, and are certain it does not pose a \
|
|
security issue despite the mismatching checksum, do the following:
|
|
1. run `bundle config set disable_checksum_validation true` to turn off checksum verification
|
|
2. run `bundle install`
|
|
|
|
(More info: The expected SHA256 checksum was #{checksum.inspect}, but the \
|
|
checksum for the downloaded gem was #{digest.inspect}.)
|
|
MESSAGE
|
|
end
|
|
true
|
|
end
|
|
|
|
def checksum_type(checksum)
|
|
case checksum.length
|
|
when 64 then :hexdigest!
|
|
when 44 then :base64digest!
|
|
else raise InstallError, "The given checksum for #{spec.full_name} (#{checksum.inspect}) is not a valid SHA256 hexdigest nor base64digest"
|
|
end
|
|
end
|
|
|
|
def hexdigest!(digest)
|
|
digest.hexdigest!
|
|
end
|
|
|
|
def base64digest!(digest)
|
|
if digest.respond_to?(:base64digest!)
|
|
digest.base64digest!
|
|
else
|
|
[digest.digest!].pack("m0")
|
|
end
|
|
end
|
|
end
|
|
end
|