class ApiController < ApplicationController
+ skip_before_action :verify_authenticity_token
+
+ before_action :check_api_readable
+
+ around_action :api_call_handle_error, :api_call_timeout
+
+ private
+
+ ##
+ # 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"]
+
+ 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
+
+ # 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 || mime == "*/*" then :xml
+ elsif mime.symbol == :json then :json
+ 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
- before_filter :authorize
- after_filter :compress_output
-
- helper :user
- model :user
-
- def authorize_web
- @current_user = User.find_by_token(session[:token])
- end
-
- # The maximum area you're allowed to request, in square degrees
- MAX_REQUEST_AREA = 0.25
-
- def map
- response.headers["Content-Type"] = 'text/xml'
- # Figure out the bbox
- bbox = params['bbox']
- unless bbox and bbox.count(',') == 3
- report_error("The parameter bbox is required, and must be of the form min_lon,min_lat,max_lon,max_lat")
- return
- end
-
- bbox = bbox.split(',')
-
- min_lon = bbox[0].to_f
- min_lat = bbox[1].to_f
- max_lon = bbox[2].to_f
- max_lat = bbox[3].to_f
-
- # check the bbox is sane
- unless min_lon <= max_lon
- report_error("The minimum longitude must be less than the maximum longitude, but it wasn't")
- return
- end
- unless min_lat <= max_lat
- report_error("The minimum latitude must be less than the maximum latitude, but it wasn't")
- return
+ request.formats = formats.compact
end
- unless min_lon >= -180 && min_lat >= -90 && max_lon <= 180 && max_lat <= 90
- report_error("The latitudes must be between -90 and 90, and longitudes between -180 and 180")
- return
- end
-
- # check the bbox isn't too large
- requested_area = (max_lat-min_lat)*(max_lon-min_lon)
- if requested_area > MAX_REQUEST_AREA
- report_error("The maximum bbox size is " + MAX_REQUEST_AREA.to_s + ", and your request was too large. Either request a smaller area, or use planet.osm")
- return
- 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])
+ end
- node_ids = nodes.collect {|node| node.id }
+ def authorize(errormessage = "Couldn't authenticate you")
+ # make the current_user object from any auth sources we have
+ setup_user_auth
- if node_ids.length > 50_000
- report_error("You requested too many nodes (limit is 50,000). Either request a smaller area, or use planet.osm")
- end
+ # handle authenticate pass/fail
+ unless current_user
+ # no auth, the user does not exist or the password was wrong
+ render :plain => errormessage, :status => :unauthorized
- # grab the segments
- segments = Array.new
- if node_ids.length > 0
- node_ids_sql = "(#{node_ids.join(',')})"
- # get the referenced segments
- segments = Segment.find_by_sql "select * from current_segments where visible = 1 and (node_a in #{node_ids_sql} or node_b in #{node_ids_sql})"
+ false
end
- # see if we have any missing nodes
- segments_nodes = segments.collect {|segment| segment.node_a }
- segments_nodes += segments.collect {|segment| segment.node_b }
-
- segments_nodes.uniq!
-
- missing_nodes = segments_nodes - node_ids
-
- # get missing nodes if there are any
- nodes += Node.find(missing_nodes) if missing_nodes.length > 0
-
- doc = OSM::API.new.get_xml_doc
-
- # get ways
- # find which ways are needed
- segment_ids = segments.collect {|segment| segment.id }
- ways = Array.new
- if segment_ids.length > 0
- way_segments = WaySegment.find_all_by_segment_id(segment_ids)
- way_ids = way_segments.collect {|way_segment| way_segment.id }
- ways = Way.find(way_ids) # NB: doesn't pick up segments, tags from db until accessed via way.way_segments etc.
-
- # seg_ids = way_segments.collect {|way_segment| way_segment.segment_id }
-
- list_of_way_segs = ways.collect {|way| way.way_segments}
- list_of_way_segs.flatten!
-
- list_of_way_segments = list_of_way_segs.collect { |way_seg| way_seg.segment_id }
+ end
+ def current_ability
+ # Use capabilities from the oauth token if it exists and is a valid access token
+ if doorkeeper_token&.accessible?
+ ApiAbility.new(nil).merge(ApiCapability.new(doorkeeper_token))
+ else
+ ApiAbility.new(current_user)
end
+ end
- segments_to_fetch = list_of_way_segments.uniq - segment_ids
-
- if segments_to_fetch.length > 0
- segments += Segment.find(segments_to_fetch)
+ def deny_access(_exception)
+ if doorkeeper_token
+ set_locale
+ report_error t("oauth.permissions.missing"), :forbidden
+ elsif current_user
+ head :forbidden
+ else
+ head :unauthorized
end
-
- # get more nodes
- #
-
- segments_nodes = segments.collect {|segment| segment.node_a }
- segments_nodes += segments.collect {|segment| segment.node_b }
-
- node_ids_a = nodes.collect {|node| node.id }
+ end
- nodes_to_get = segments_nodes - node_ids_a
- nodes += Node.find(nodes_to_get) if nodes_to_get.length > 0
+ def gpx_status
+ status = database_status
+ status = "offline" if status == "online" && Settings.status == "gpx_offline"
+ status
+ end
- visible_nodes = {}
- user_display_name_cache = {}
+ ##
+ # 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
+ logger.info " setup_user_auth"
+ # try and setup using OAuth
+ self.current_user = User.find(doorkeeper_token.resource_owner_id) if doorkeeper_token&.accessible?
+
+ # 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
- nodes.each do |node|
- if node.visible?
- doc.root << node.to_xml_node(user_display_name_cache)
- visible_nodes[node.id] = node
+ # 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
- visible_segments = {}
+ def api_call_handle_error
+ yield
+ rescue ActionController::UnknownFormat
+ head :not_acceptable
+ rescue ActiveRecord::RecordNotFound => e
+ head :not_found
+ rescue LibXML::XML::Error, ArgumentError => e
+ report_error e.message, :bad_request
+ rescue ActiveRecord::RecordInvalid => e
+ message = "#{e.record.class} #{e.record.id}: "
+ e.record.errors.each { |error| message << "#{error.attribute}: #{error.message} (#{e.record[error.attribute].inspect})" }
+ report_error message, :bad_request
+ rescue OSM::APIError => e
+ report_error e.message, e.status
+ rescue AbstractController::ActionNotFound, CanCan::AccessDenied => e
+ raise
+ rescue StandardError => e
+ logger.info("API threw unexpected #{e.class} exception: #{e.message}")
+ e.backtrace.each { |l| logger.info(l) }
+ report_error "#{e.class}: #{e.message}", :internal_server_error
+ end
- segments.each do |segment|
- if visible_nodes[segment.node_a] and visible_nodes[segment.node_b] and segment.visible?
- doc.root << segment.to_xml_node(user_display_name_cache)
- visible_segments[segment.id] = segment
- end
+ ##
+ # wrap an api call in a timeout
+ def api_call_timeout(&)
+ Timeout.timeout(Settings.api_timeout, &)
+ rescue ActionView::Template::Error => e
+ e = e.cause
+
+ if e.is_a?(Timeout::Error) ||
+ (e.is_a?(ActiveRecord::StatementInvalid) && e.message.include?("execution expired"))
+ ActiveRecord::Base.connection.raw_connection.cancel
+ raise OSM::APITimeoutError
+ else
+ raise
end
+ rescue Timeout::Error
+ ActiveRecord::Base.connection.raw_connection.cancel
+ raise OSM::APITimeoutError
+ end
- ways.each do |way|
- doc.root << way.to_xml_node(visible_segments, user_display_name_cache) if way.visible?
- end
-
- render :text => doc.to_s
+ ##
+ # check the api change rate limit
+ def check_rate_limit(new_changes = 1)
+ max_changes = ActiveRecord::Base.connection.select_value(
+ "SELECT api_rate_limit($1)", "api_rate_limit", [current_user.id]
+ )
+ raise OSM::APIRateLimitExceeded if new_changes > max_changes
end
end
projects / rails.git / blobdiff