module API module Helpers PRIVATE_TOKEN_HEADER = "HTTP_PRIVATE_TOKEN" PRIVATE_TOKEN_PARAM = :private_token SUDO_HEADER ="HTTP_SUDO" SUDO_PARAM = :sudo def parse_boolean(value) [ true, 1, '1', 't', 'T', 'true', 'TRUE', 'on', 'ON' ].include?(value) end def current_user private_token = (params[PRIVATE_TOKEN_PARAM] || env[PRIVATE_TOKEN_HEADER]).to_s @current_user ||= (User.find_by(authentication_token: private_token) || doorkeeper_guard) unless @current_user && Gitlab::UserAccess.allowed?(@current_user) return nil end identifier = sudo_identifier() # If the sudo is the current user do nothing if identifier && !(@current_user.id == identifier || @current_user.username == identifier) render_api_error!('403 Forbidden: Must be admin to use sudo', 403) unless @current_user.is_admin? @current_user = User.by_username_or_id(identifier) not_found!("No user id or username for: #{identifier}") if @current_user.nil? end @current_user end def sudo_identifier() identifier ||= params[SUDO_PARAM] ||= env[SUDO_HEADER] # Regex for integers if !!(identifier =~ /^[0-9]+$/) identifier.to_i else identifier end end def user_project @project ||= find_project(params[:id]) @project || not_found!("Project") end def find_project(id) project = Project.find_with_namespace(id) || Project.find_by(id: id) if project && can?(current_user, :read_project, project) project else nil end end def project_service @project_service ||= begin underscored_service = params[:service_slug].underscore if Service.available_services_names.include?(underscored_service) user_project.build_missing_services service_method = "#{underscored_service}_service" send_service(service_method) end end @project_service || not_found!("Service") end def send_service(service_method) user_project.send(service_method) end def service_attributes @service_attributes ||= project_service.fields.inject([]) do |arr, hash| arr << hash[:name].to_sym end end def find_group(id) begin group = Group.find(id) rescue ActiveRecord::RecordNotFound group = Group.find_by!(path: id) end if can?(current_user, :read_group, group) group else forbidden!("#{current_user.username} lacks sufficient "\ "access to #{group.name}") end end def paginate(relation) relation.page(params[:page]).per(params[:per_page].to_i).tap do |data| add_pagination_headers(data) end end def authenticate! unauthorized! unless current_user end def authenticate_by_gitlab_shell_token! input = params['secret_token'].try(:chomp) unless Devise.secure_compare(secret_token, input) unauthorized! end end def authenticated_as_admin! forbidden! unless current_user.is_admin? end def authorize!(action, subject) unless abilities.allowed?(current_user, action, subject) forbidden! end end def authorize_push_project authorize! :push_code, user_project end def authorize_admin_project authorize! :admin_project, user_project end def require_gitlab_workhorse! unless env['HTTP_GITLAB_WORKHORSE'].present? forbidden!('Request should be executed via GitLab Workhorse') end end def can?(object, action, subject) abilities.allowed?(object, action, subject) end # Checks the occurrences of required attributes, each attribute must be present in the params hash # or a Bad Request error is invoked. # # Parameters: # keys (required) - A hash consisting of keys that must be present def required_attributes!(keys) keys.each do |key| bad_request!(key) unless params[key].present? end end def attributes_for_keys(keys, custom_params = nil) attrs = {} keys.each do |key| if params[key].present? or (params.has_key?(key) and params[key] == false) attrs[key] = params[key] end end ActionController::Parameters.new(attrs).permit! end # Helper method for validating all labels against its names def validate_label_params(params) errors = {} if params[:labels].present? params[:labels].split(',').each do |label_name| label = user_project.labels.create_with( color: Label::DEFAULT_COLOR).find_or_initialize_by( title: label_name.strip) if label.invalid? errors[label.title] = label.errors end end end errors end def validate_access_level?(level) Gitlab::Access.options_with_owner.values.include? level.to_i end def issuable_order_by if params["order_by"] == 'updated_at' 'updated_at' else 'created_at' end end def issuable_sort if params["sort"] == 'asc' :asc else :desc end end def filter_by_iid(items, iid) items.where(iid: iid) end # error helpers def forbidden!(reason = nil) message = ['403 Forbidden'] message << " - #{reason}" if reason render_api_error!(message.join(' '), 403) end def bad_request!(attribute) message = ["400 (Bad request)"] message << "\"" + attribute.to_s + "\" not given" render_api_error!(message.join(' '), 400) end def not_found!(resource = nil) message = ["404"] message << resource if resource message << "Not Found" render_api_error!(message.join(' '), 404) end def unauthorized! render_api_error!('401 Unauthorized', 401) end def not_allowed! render_api_error!('405 Method Not Allowed', 405) end def conflict!(message = nil) render_api_error!(message || '409 Conflict', 409) end def file_to_large! render_api_error!('413 Request Entity Too Large', 413) end def render_validation_error!(model) if model.errors.any? render_api_error!(model.errors.messages || '400 Bad Request', 400) end end def render_api_error!(message, status) error!({ 'message' => message }, status) end # Projects helpers def filter_projects(projects) # If the archived parameter is passed, limit results accordingly if params[:archived].present? projects = projects.where(archived: parse_boolean(params[:archived])) end if params[:search].present? projects = projects.search(params[:search]) end projects.reorder(project_order_by => project_sort) end def project_order_by order_fields = %w(id name path created_at updated_at last_activity_at) if order_fields.include?(params['order_by']) params['order_by'] else 'created_at' end end def project_sort if params["sort"] == 'asc' :asc else :desc end end # file helpers def uploaded_file(field, uploads_path) if params[field] bad_request!("#{field} is not a file") unless params[field].respond_to?(:filename) return params[field] end return nil unless params["#{field}.path"] && params["#{field}.name"] # sanitize file paths # this requires all paths to exist required_attributes! %W(#{field}.path) uploads_path = File.realpath(uploads_path) file_path = File.realpath(params["#{field}.path"]) bad_request!('Bad file path') unless file_path.start_with?(uploads_path) UploadedFile.new( file_path, params["#{field}.name"], params["#{field}.type"] || 'application/octet-stream', ) end def present_file!(path, filename, content_type = 'application/octet-stream') filename ||= File.basename(path) header['Content-Disposition'] = "attachment; filename=#{filename}" header['Content-Transfer-Encoding'] = 'binary' content_type content_type # Support download acceleration case headers['X-Sendfile-Type'] when 'X-Sendfile' header['X-Sendfile'] = path body else file FileStreamer.new(path) end end private def add_pagination_headers(paginated_data) header 'X-Total', paginated_data.total_count.to_s header 'X-Total-Pages', paginated_data.total_pages.to_s header 'X-Per-Page', paginated_data.limit_value.to_s header 'X-Page', paginated_data.current_page.to_s header 'X-Next-Page', paginated_data.next_page.to_s header 'X-Prev-Page', paginated_data.prev_page.to_s header 'Link', pagination_links(paginated_data) end def pagination_links(paginated_data) request_url = request.url.split('?').first links = [] links << %(<#{request_url}?page=#{paginated_data.current_page - 1}&per_page=#{paginated_data.limit_value}>; rel="prev") unless paginated_data.first_page? links << %(<#{request_url}?page=#{paginated_data.current_page + 1}&per_page=#{paginated_data.limit_value}>; rel="next") unless paginated_data.last_page? links << %(<#{request_url}?page=1&per_page=#{paginated_data.limit_value}>; rel="first") links << %(<#{request_url}?page=#{paginated_data.total_pages}&per_page=#{paginated_data.limit_value}>; rel="last") links.join(', ') end def abilities @abilities ||= begin abilities = Six.new abilities << Ability abilities end end def secret_token File.read(Gitlab.config.gitlab_shell.secret_file).chomp end def handle_member_errors(errors) error!(errors[:access_level], 422) if errors[:access_level].any? not_found!(errors) end end end