X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/6b7374727128c95168d4fa6f6503a0e7d1bae729..ea9f7843509f0023892585ff80529f023382993b:/app/controllers/api_controller.rb diff --git a/app/controllers/api_controller.rb b/app/controllers/api_controller.rb index d1c48cfce..478810dfc 100644 --- a/app/controllers/api_controller.rb +++ b/app/controllers/api_controller.rb @@ -1,56 +1,131 @@ class ApiController < ApplicationController + skip_before_action :verify_authenticity_token - def map - # Figure out the bbox - bbox = params['bbox'] - unless bbox and bbox.count(',') == 3 - render :nothing => true, :status => 400 - return - end + private - bbox = bbox.split(',') + ## + # Set allowed request formats if no explicit format has been + # requested via a URL suffix. Allowed formats are taken from + # any HTTP Accept header with XML as the default. + def set_request_formats + unless params[:format] + accept_header = request.headers["HTTP_ACCEPT"] - min_lon = bbox[0].to_f - min_lat = bbox[1].to_f - max_lon = bbox[2].to_f - max_lat = bbox[3].to_f + if accept_header + # Some clients (such asJOSM) send Accept headers which cannot be + # parse by Rails, for example: + # + # Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2 + # + # where both "*" and ".2" as a quality do not adhere to the syntax + # described in RFC 7231, section 5.3.1, etc. + # + # As a workaround, and for back compatibility, default to XML format. + mimetypes = begin + Mime::Type.parse(accept_header) + rescue Mime::Type::InvalidMimeType + Array(Mime[:xml]) + end - # get all the nodes - nodes = Node.find(:all, :conditions => ['latitude > ? AND longitude > ? AND latitude < ? AND longitude < ? AND visible = 1', min_lat, min_lon, max_lat, max_lon]) + # Allow XML and JSON formats, and treat an all formats wildcard + # as XML for backwards compatibility - all other formats are discarded + # which will result in a 406 Not Acceptable response being sent + formats = mimetypes.map do |mime| + if mime.symbol == :xml then :xml + elsif mime.symbol == :json then :json + elsif mime == "*/*" then :xml + end + end + else + # Default to XML if no accept header was sent - this includes + # the unit tests which don't set one by default + formats = Array(:xml) + end - node_ids = nodes.collect {|node| node.id } - node_ids_sql = "(#{node_ids.join(',')})" + request.formats = formats.compact + end + end - # get the referenced segments - segments = Segment.find_by_sql "select * from segments where node_a in #{node_ids_sql} or node_b in #{node_ids_sql}" + def authorize(realm = "Web Password", errormessage = "Couldn't authenticate you") + # make the current_user object from any auth sources we have + setup_user_auth - # see if we have nay missing nodes - segments_nodes = segments.collect {|segment| segment.node_a } - segments_nodes += segments.collect {|segment| segment.node_b } + # handle authenticate pass/fail + unless current_user + # no auth, the user does not exist or the password was wrong + response.headers["WWW-Authenticate"] = "Basic realm=\"#{realm}\"" + render :plain => errormessage, :status => :unauthorized + false + end + end - segments_nodes.uniq! + def current_ability + # Use capabilities from the oauth token if it exists and is a valid access token + if Authenticator.new(self, [:token]).allow? + ApiAbility.new(nil).merge(ApiCapability.new(current_token)) + else + ApiAbility.new(current_user) + end + end - missing_nodes = segments_nodes - node_ids + def deny_access(_exception) + if current_token + set_locale + report_error t("oauth.permissions.missing"), :forbidden + elsif current_user + head :forbidden + else + realm = "Web Password" + errormessage = "Couldn't authenticate you" + response.headers["WWW-Authenticate"] = "Basic realm=\"#{realm}\"" + render :plain => errormessage, :status => :unauthorized + end + end - # get missing nodes if there are any - nodes += Node.find(missing_nodes) if missing_nodes.length > 0 + def gpx_status + status = database_status + status = "offline" if status == "online" && Settings.status == "gpx_offline" + status + end - doc = XML::Document.new - doc.encoding = 'UTF-8' - root = XML::Node.new 'osm' - root['version'] = '0.4' - root['generator'] = 'OpenStreetMap server' - doc.root = root - - nodes.each do |node| - root << node.to_xml_node() + ## + # sets up the current_user for use by other methods. this is mostly called + # from the authorize method, but can be called elsewhere if authorisation + # is optional. + def setup_user_auth + # try and setup using OAuth + unless Authenticator.new(self, [:token]).allow? + username, passwd = get_auth_data # parse from headers + # authenticate per-scheme + self.current_user = if username.nil? + nil # no authentication provided - perhaps first connect (client should retry after 401) + elsif username == "token" + User.authenticate(:token => passwd) # preferred - random token for user from db, passed in basic auth + else + User.authenticate(:username => username, :password => passwd) # basic auth + end end - segments.each do |segment| - root << segment.to_xml_node() - end - - render :text => doc.to_s + # have we identified the user? + if current_user + # check if the user has been banned + user_block = current_user.blocks.active.take + unless user_block.nil? + set_locale + if user_block.zero_hour? + report_error t("application.setup_user_auth.blocked_zero_hour"), :forbidden + else + report_error t("application.setup_user_auth.blocked"), :forbidden + end + end + # if the user hasn't seen the contributor terms then don't + # allow editing - they have to go to the web site and see + # (but can decline) the CTs to continue. + if !current_user.terms_seen && flash[:skip_terms].nil? + set_locale + report_error t("application.setup_user_auth.need_to_see_terms"), :forbidden + end + end end end