115 lines
3.3 KiB
Ruby
115 lines
3.3 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module Gpg
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extend self
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MUTEX = Mutex.new
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module CurrentKeyChain
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extend self
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def add(key)
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GPGME::Key.import(key)
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end
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def fingerprints_from_key(key)
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import = GPGME::Key.import(key)
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return [] if import.imported == 0
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import.imports.map(&:fingerprint)
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end
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end
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def fingerprints_from_key(key)
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using_tmp_keychain do
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CurrentKeyChain.fingerprints_from_key(key)
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end
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end
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def primary_keyids_from_key(key)
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using_tmp_keychain do
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fingerprints = CurrentKeyChain.fingerprints_from_key(key)
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GPGME::Key.find(:public, fingerprints).map { |raw_key| raw_key.primary_subkey.keyid }
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end
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end
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def subkeys_from_key(key)
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using_tmp_keychain do
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fingerprints = CurrentKeyChain.fingerprints_from_key(key)
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raw_keys = GPGME::Key.find(:public, fingerprints)
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raw_keys.each_with_object({}) do |raw_key, grouped_subkeys|
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primary_subkey_id = raw_key.primary_subkey.keyid
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grouped_subkeys[primary_subkey_id] = raw_key.subkeys[1..-1].map do |s|
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{ keyid: s.keyid, fingerprint: s.fingerprint }
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end
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end
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end
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end
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def user_infos_from_key(key)
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using_tmp_keychain do
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fingerprints = CurrentKeyChain.fingerprints_from_key(key)
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GPGME::Key.find(:public, fingerprints).flat_map do |raw_key|
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raw_key.uids.each_with_object([]) do |uid, arr|
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name = uid.name.force_encoding('UTF-8')
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email = uid.email.force_encoding('UTF-8')
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arr << { name: name, email: email.downcase } if name.valid_encoding? && email.valid_encoding?
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end
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end
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end
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end
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# Allows thread safe switching of temporary keychain files
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#
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# 1. The current thread may use nesting of temporary keychain
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# 2. Another thread needs to wait for the lock to be released
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def using_tmp_keychain(&block)
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if MUTEX.locked? && MUTEX.owned?
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optimistic_using_tmp_keychain(&block)
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else
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if Gitlab.rails5?
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ActiveSupport::Dependencies.interlock.permit_concurrent_loads do
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MUTEX.synchronize do
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optimistic_using_tmp_keychain(&block)
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end
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end
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else
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MUTEX.synchronize do
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optimistic_using_tmp_keychain(&block)
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end
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end
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end
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end
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# 1. Returns the custom home directory if one has been set by calling
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# `GPGME::Engine.home_dir=`
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# 2. Returns the default home directory otherwise
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def current_home_dir
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GPGME::Engine.info.first.home_dir || GPGME::Engine.dirinfo('homedir')
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end
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private
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def optimistic_using_tmp_keychain
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previous_dir = current_home_dir
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tmp_dir = Dir.mktmpdir
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GPGME::Engine.home_dir = tmp_dir
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yield
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ensure
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# Ignore any errors when removing the tmp directory, as we may run into a
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# race condition:
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# The `gpg-agent` agent process may clean up some files as well while
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# `FileUtils.remove_entry` is iterating the directory and removing all
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# its contained files and directories recursively, which could raise an
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# error.
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FileUtils.remove_entry(tmp_dir, true)
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GPGME::Engine.home_dir = previous_dir
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end
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end
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end
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