447 lines
13 KiB
Ruby
447 lines
13 KiB
Ruby
# Gitaly note: SSH key operations are not part of Gitaly so will never be migrated.
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require 'securerandom'
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module Gitlab
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class Shell
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GITLAB_SHELL_ENV_VARS = %w(GIT_TERMINAL_PROMPT).freeze
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Error = Class.new(StandardError)
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KeyAdder = Struct.new(:io) do
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def add_key(id, key)
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key = Gitlab::Shell.strip_key(key)
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# Newline and tab are part of the 'protocol' used to transmit id+key to the other end
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if key.include?("\t") || key.include?("\n")
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raise Error.new("Invalid key: #{key.inspect}")
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end
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io.puts("#{id}\t#{key}")
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end
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end
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class << self
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def secret_token
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@secret_token ||= begin
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File.read(Gitlab.config.gitlab_shell.secret_file).chomp
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end
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end
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def ensure_secret_token!
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return if File.exist?(File.join(Gitlab.config.gitlab_shell.path, '.gitlab_shell_secret'))
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generate_and_link_secret_token
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end
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def version_required
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@version_required ||= File.read(Rails.root
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.join('GITLAB_SHELL_VERSION')).strip
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end
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def strip_key(key)
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key.split(/[ ]+/)[0, 2].join(' ')
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end
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private
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# Create (if necessary) and link the secret token file
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def generate_and_link_secret_token
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secret_file = Gitlab.config.gitlab_shell.secret_file
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shell_path = Gitlab.config.gitlab_shell.path
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unless File.size?(secret_file)
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# Generate a new token of 16 random hexadecimal characters and store it in secret_file.
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@secret_token = SecureRandom.hex(16)
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File.write(secret_file, @secret_token)
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end
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link_path = File.join(shell_path, '.gitlab_shell_secret')
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if File.exist?(shell_path) && !File.exist?(link_path)
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FileUtils.symlink(secret_file, link_path)
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end
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end
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end
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# Init new repository
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#
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# storage - the shard key
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# name - project disk path
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#
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# Ex.
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# create_repository("default", "gitlab/gitlab-ci")
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#
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def create_repository(storage, name)
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relative_path = name.dup
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relative_path << '.git' unless relative_path.end_with?('.git')
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repository = Gitlab::Git::Repository.new(storage, relative_path, '')
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wrapped_gitaly_errors { repository.gitaly_repository_client.create_repository }
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true
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rescue => err # Once the Rugged codes gets removes this can be improved
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Rails.logger.error("Failed to add repository #{storage}/#{name}: #{err}")
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false
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end
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# Import repository
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#
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# storage - project's storage name
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# name - project disk path
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# url - URL to import from
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#
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# Ex.
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# import_repository("nfs-file06", "gitlab/gitlab-ci", "https://gitlab.com/gitlab-org/gitlab-test.git")
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#
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def import_repository(storage, name, url)
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if url.start_with?('.', '/')
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raise Error.new("don't use disk paths with import_repository: #{url.inspect}")
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end
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relative_path = "#{name}.git"
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cmd = GitalyGitlabProjects.new(storage, relative_path)
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success = cmd.import_project(url, git_timeout)
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raise Error, cmd.output unless success
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success
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end
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# Fetch remote for repository
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#
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# repository - an instance of Git::Repository
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# remote - remote name
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# ssh_auth - SSH known_hosts data and a private key to use for public-key authentication
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# forced - should we use --force flag?
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# no_tags - should we use --no-tags flag?
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#
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# Ex.
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# fetch_remote(my_repo, "upstream")
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#
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def fetch_remote(repository, remote, ssh_auth: nil, forced: false, no_tags: false, prune: true)
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wrapped_gitaly_errors do
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repository.gitaly_repository_client.fetch_remote(remote, ssh_auth: ssh_auth, forced: forced, no_tags: no_tags, timeout: git_timeout, prune: prune)
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end
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end
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# Move repository reroutes to mv_directory which is an alias for
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# mv_namespace. Given the underlying implementation is a move action,
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# indescriminate of what the folders might be.
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#
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# storage - project's storage path
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# path - project disk path
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# new_path - new project disk path
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#
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# Ex.
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# mv_repository("/path/to/storage", "gitlab/gitlab-ci", "randx/gitlab-ci-new")
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def mv_repository(storage, path, new_path)
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return false if path.empty? || new_path.empty?
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!!mv_directory(storage, "#{path}.git", "#{new_path}.git")
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end
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# Fork repository to new path
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# forked_from_storage - forked-from project's storage name
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# forked_from_disk_path - project disk relative path
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# forked_to_storage - forked-to project's storage name
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# forked_to_disk_path - forked project disk relative path
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#
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# Ex.
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# fork_repository("nfs-file06", "gitlab/gitlab-ci", "nfs-file07", "new-namespace/gitlab-ci")
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def fork_repository(forked_from_storage, forked_from_disk_path, forked_to_storage, forked_to_disk_path)
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forked_from_relative_path = "#{forked_from_disk_path}.git"
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fork_args = [forked_to_storage, "#{forked_to_disk_path}.git"]
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GitalyGitlabProjects.new(forked_from_storage, forked_from_relative_path).fork_repository(*fork_args)
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end
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# Removes a repository from file system, using rm_diretory which is an alias
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# for rm_namespace. Given the underlying implementation removes the name
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# passed as second argument on the passed storage.
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#
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# storage - project's storage path
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# name - project disk path
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#
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# Ex.
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# remove_repository("/path/to/storage", "gitlab/gitlab-ci")
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def remove_repository(storage, name)
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return false if name.empty?
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!!rm_directory(storage, "#{name}.git")
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rescue ArgumentError => e
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Rails.logger.warn("Repository does not exist: #{e} at: #{name}.git")
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false
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end
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# Add new key to gitlab-shell
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#
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# Ex.
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# add_key("key-42", "sha-rsa ...")
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#
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def add_key(key_id, key_content)
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return unless self.authorized_keys_enabled?
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gitlab_shell_fast_execute([gitlab_shell_keys_path,
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'add-key', key_id, self.class.strip_key(key_content)])
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end
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# Batch-add keys to authorized_keys
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#
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# Ex.
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# batch_add_keys { |adder| adder.add_key("key-42", "sha-rsa ...") }
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def batch_add_keys(&block)
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return unless self.authorized_keys_enabled?
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IO.popen(%W(#{gitlab_shell_path}/bin/gitlab-keys batch-add-keys), 'w') do |io|
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yield(KeyAdder.new(io))
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end
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end
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# Remove ssh key from gitlab shell
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#
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# Ex.
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# remove_key("key-342", "sha-rsa ...")
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#
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def remove_key(key_id, key_content = nil)
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return unless self.authorized_keys_enabled?
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args = [gitlab_shell_keys_path, 'rm-key', key_id]
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args << key_content if key_content
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gitlab_shell_fast_execute(args)
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end
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# Remove all ssh keys from gitlab shell
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#
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# Ex.
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# remove_all_keys
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#
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def remove_all_keys
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return unless self.authorized_keys_enabled?
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gitlab_shell_fast_execute([gitlab_shell_keys_path, 'clear'])
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end
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# Remove ssh keys from gitlab shell that are not in the DB
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#
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# Ex.
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# remove_keys_not_found_in_db
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#
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# rubocop: disable CodeReuse/ActiveRecord
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def remove_keys_not_found_in_db
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return unless self.authorized_keys_enabled?
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Rails.logger.info("Removing keys not found in DB")
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batch_read_key_ids do |ids_in_file|
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ids_in_file.uniq!
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keys_in_db = Key.where(id: ids_in_file)
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next unless ids_in_file.size > keys_in_db.count # optimization
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ids_to_remove = ids_in_file - keys_in_db.pluck(:id)
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ids_to_remove.each do |id|
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Rails.logger.info("Removing key-#{id} not found in DB")
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remove_key("key-#{id}")
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end
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end
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end
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# rubocop: enable CodeReuse/ActiveRecord
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# Iterate over all ssh key IDs from gitlab shell, in batches
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#
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# Ex.
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# batch_read_key_ids { |batch| keys = Key.where(id: batch) }
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#
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def batch_read_key_ids(batch_size: 100, &block)
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return unless self.authorized_keys_enabled?
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list_key_ids do |key_id_stream|
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key_id_stream.lazy.each_slice(batch_size) do |lines|
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key_ids = lines.map { |l| l.chomp.to_i }
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yield(key_ids)
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end
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end
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end
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# Stream all ssh key IDs from gitlab shell, separated by newlines
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#
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# Ex.
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# list_key_ids
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#
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def list_key_ids(&block)
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return unless self.authorized_keys_enabled?
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IO.popen(%W(#{gitlab_shell_path}/bin/gitlab-keys list-key-ids), &block)
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end
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# Add empty directory for storing repositories
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#
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# Ex.
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# add_namespace("default", "gitlab")
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#
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def add_namespace(storage, name)
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Gitlab::GitalyClient::NamespaceService.new(storage).add(name)
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rescue GRPC::InvalidArgument => e
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raise ArgumentError, e.message
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end
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# Remove directory from repositories storage
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# Every repository inside this directory will be removed too
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#
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# Ex.
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# rm_namespace("default", "gitlab")
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#
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def rm_namespace(storage, name)
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Gitlab::GitalyClient::NamespaceService.new(storage).remove(name)
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rescue GRPC::InvalidArgument => e
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raise ArgumentError, e.message
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end
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alias_method :rm_directory, :rm_namespace
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# Move namespace directory inside repositories storage
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#
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# Ex.
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# mv_namespace("/path/to/storage", "gitlab", "gitlabhq")
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#
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def mv_namespace(storage, old_name, new_name)
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Gitlab::GitalyClient::NamespaceService.new(storage).rename(old_name, new_name)
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rescue GRPC::InvalidArgument
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false
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end
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alias_method :mv_directory, :mv_namespace
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def url_to_repo(path)
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Gitlab.config.gitlab_shell.ssh_path_prefix + "#{path}.git"
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end
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# Return GitLab shell version
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def version
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gitlab_shell_version_file = "#{gitlab_shell_path}/VERSION"
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if File.readable?(gitlab_shell_version_file)
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File.read(gitlab_shell_version_file).chomp
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end
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end
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# Check if such directory exists in repositories.
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#
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# Usage:
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# exists?(storage, 'gitlab')
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# exists?(storage, 'gitlab/cookies.git')
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#
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# rubocop: disable CodeReuse/ActiveRecord
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def exists?(storage, dir_name)
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Gitlab::GitalyClient::NamespaceService.new(storage).exists?(dir_name)
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end
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# rubocop: enable CodeReuse/ActiveRecord
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protected
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def gitlab_shell_path
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File.expand_path(Gitlab.config.gitlab_shell.path)
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end
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def gitlab_shell_hooks_path
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File.expand_path(Gitlab.config.gitlab_shell.hooks_path)
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end
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def gitlab_shell_user_home
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File.expand_path("~#{Gitlab.config.gitlab_shell.ssh_user}")
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end
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def full_path(storage, dir_name)
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raise ArgumentError.new("Directory name can't be blank") if dir_name.blank?
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File.join(Gitlab.config.repositories.storages[storage].legacy_disk_path, dir_name)
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end
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def gitlab_shell_projects_path
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File.join(gitlab_shell_path, 'bin', 'gitlab-projects')
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end
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def gitlab_shell_keys_path
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File.join(gitlab_shell_path, 'bin', 'gitlab-keys')
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end
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def authorized_keys_enabled?
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# Return true if nil to ensure the authorized_keys methods work while
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# fixing the authorized_keys file during migration.
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return true if Gitlab::CurrentSettings.current_application_settings.authorized_keys_enabled.nil?
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Gitlab::CurrentSettings.current_application_settings.authorized_keys_enabled
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end
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private
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def gitlab_shell_fast_execute(cmd)
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output, status = gitlab_shell_fast_execute_helper(cmd)
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return true if status.zero?
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Rails.logger.error("gitlab-shell failed with error #{status}: #{output}")
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false
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end
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def gitlab_shell_fast_execute_raise_error(cmd, vars = {})
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output, status = gitlab_shell_fast_execute_helper(cmd, vars)
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raise Error, output unless status.zero?
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true
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end
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def gitlab_shell_fast_execute_helper(cmd, vars = {})
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vars.merge!(ENV.to_h.slice(*GITLAB_SHELL_ENV_VARS))
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# Don't pass along the entire parent environment to prevent gitlab-shell
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# from wasting I/O by searching through GEM_PATH
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Bundler.with_original_env { Popen.popen(cmd, nil, vars) }
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end
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def git_timeout
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Gitlab.config.gitlab_shell.git_timeout
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end
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def wrapped_gitaly_errors
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yield
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rescue GRPC::NotFound, GRPC::BadStatus => e
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# Old Popen code returns [Error, output] to the caller, so we
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# need to do the same here...
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raise Error, e
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end
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class GitalyGitlabProjects
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attr_reader :shard_name, :repository_relative_path, :output
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def initialize(shard_name, repository_relative_path)
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@shard_name = shard_name
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@repository_relative_path = repository_relative_path
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@output = ''
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end
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def import_project(source, _timeout)
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raw_repository = Gitlab::Git::Repository.new(shard_name, repository_relative_path, nil)
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Gitlab::GitalyClient::RepositoryService.new(raw_repository).import_repository(source)
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true
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rescue GRPC::BadStatus => e
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@output = e.message
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false
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end
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def fork_repository(new_shard_name, new_repository_relative_path)
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target_repository = Gitlab::Git::Repository.new(new_shard_name, new_repository_relative_path, nil)
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raw_repository = Gitlab::Git::Repository.new(shard_name, repository_relative_path, nil)
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Gitlab::GitalyClient::RepositoryService.new(target_repository).fork_repository(raw_repository)
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rescue GRPC::BadStatus => e
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logger.error "fork-repository failed: #{e.message}"
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false
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end
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def logger
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Rails.logger
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end
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end
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end
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end
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