class ApiController < ApplicationController
+ skip_before_action :verify_authenticity_token
+ before_action :check_api_readable, :except => [:capabilities]
+ before_action :setup_user_auth, :only => [:permissions]
+ around_action :api_call_handle_error, :api_call_timeout
+
+ # Get an XML response containing a list of tracepoints that have been uploaded
+ # within the specified bounding box, and in the specified page.
+ def trackpoints
+ # retrieve the page number
+ page = params["page"].to_s.to_i
+
+ unless page >= 0
+ report_error("Page number must be greater than or equal to 0")
+ return
+ 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
+ offset = page * TRACEPOINTS_PER_PAGE
- def map
- GC.start
- 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")
+ # check boundary is sane and area within defined
+ # see /config/application.yml
+ begin
+ bbox = BoundingBox.from_bbox_params(params)
+ bbox.check_boundaries
+ bbox.check_size
+ rescue StandardError => err
+ report_error(err.message)
return
end
- bbox = bbox.split(',')
+ # get all the points
+ ordered_points = Tracepoint.bbox(bbox).joins(:trace).where(:gpx_files => { :visibility => %w[trackable identifiable] }).order("gpx_id DESC, trackid ASC, timestamp ASC")
+ unordered_points = Tracepoint.bbox(bbox).joins(:trace).where(:gpx_files => { :visibility => %w[public private] }).order("gps_points.latitude", "gps_points.longitude", "gps_points.timestamp")
+ points = ordered_points.union_all(unordered_points).offset(offset).limit(TRACEPOINTS_PER_PAGE)
+
+ doc = XML::Document.new
+ doc.encoding = XML::Encoding::UTF_8
+ root = XML::Node.new "gpx"
+ root["version"] = "1.0"
+ root["creator"] = "OpenStreetMap.org"
+ root["xmlns"] = "http://www.topografix.com/GPX/1/0"
+
+ doc.root = root
+
+ # initialise these variables outside of the loop so that they
+ # stay in scope and don't get free'd up by the GC during the
+ # loop.
+ gpx_id = -1
+ trackid = -1
+ track = nil
+ trkseg = nil
+ anon_track = nil
+ anon_trkseg = nil
+ gpx_file = nil
+ timestamps = false
+
+ points.each do |point|
+ if gpx_id != point.gpx_id
+ gpx_id = point.gpx_id
+ trackid = -1
+ gpx_file = Trace.find(gpx_id)
+
+ if gpx_file.trackable?
+ track = XML::Node.new "trk"
+ doc.root << track
+ timestamps = true
+
+ if gpx_file.identifiable?
+ track << (XML::Node.new("name") << gpx_file.name)
+ track << (XML::Node.new("desc") << gpx_file.description)
+ track << (XML::Node.new("url") << url_for(:controller => "traces", :action => "show", :display_name => gpx_file.user.display_name, :id => gpx_file.id))
+ end
+ else
+ # use the anonymous track segment if the user hasn't allowed
+ # their GPX points to be tracked.
+ timestamps = false
+ if anon_track.nil?
+ anon_track = XML::Node.new "trk"
+ doc.root << anon_track
+ end
+ track = anon_track
+ end
+ end
- 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 trackid != point.trackid
+ if gpx_file.trackable?
+ trkseg = XML::Node.new "trkseg"
+ track << trkseg
+ trackid = point.trackid
+ else
+ if anon_trkseg.nil?
+ anon_trkseg = XML::Node.new "trkseg"
+ anon_track << anon_trkseg
+ end
+ trkseg = anon_trkseg
+ end
+ end
- # 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
+ trkseg << point.to_xml_node(timestamps)
end
- unless min_lat <= max_lat
- report_error("The minimum latitude must be less than the maximum latitude, but it wasn't")
- return
- 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")
+
+ response.headers["Content-Disposition"] = "attachment; filename=\"tracks.gpx\""
+
+ render :xml => doc.to_s
+ end
+
+ # This is probably the most common call of all. It is used for getting the
+ # OSM data for a specified bounding box, usually for editing. First the
+ # bounding box (bbox) is checked to make sure that it is sane. All nodes
+ # are searched, then all the ways that reference those nodes are found.
+ # All Nodes that are referenced by those ways are fetched and added to the list
+ # of nodes.
+ # Then all the relations that reference the already found nodes and ways are
+ # fetched. All the nodes and ways that are referenced by those ways are then
+ # fetched. Finally all the xml is returned.
+ def map
+ # Figure out the bbox
+ # check boundary is sane and area within defined
+ # see /config/application.yml
+ begin
+ bbox = BoundingBox.from_bbox_params(params)
+ bbox.check_boundaries
+ bbox.check_size
+ rescue StandardError => err
+ report_error(err.message)
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")
+ nodes = Node.bbox(bbox).where(:visible => true).includes(:node_tags).limit(MAX_NUMBER_OF_NODES + 1)
+
+ node_ids = nodes.collect(&:id)
+ if node_ids.length > MAX_NUMBER_OF_NODES
+ report_error("You requested too many nodes (limit is #{MAX_NUMBER_OF_NODES}). 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])
-
- node_ids = nodes.collect {|node| node.id }
+ doc = OSM::API.new.get_xml_doc
- 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
+ # add bounds
+ doc.root << bbox.add_bounds_to(XML::Node.new("bounds"))
- # 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})"
+ # get ways
+ # find which ways are needed
+ ways = []
+ if node_ids.empty?
+ list_of_way_nodes = []
+ else
+ way_nodes = WayNode.where(:node_id => node_ids)
+ way_ids = way_nodes.collect { |way_node| way_node.id[0] }
+ ways = Way.preload(:way_nodes, :way_tags).find(way_ids)
+
+ list_of_way_nodes = ways.collect do |way|
+ way.way_nodes.collect(&:node_id)
+ end
+ list_of_way_nodes.flatten!
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
+ # - [0] in case some thing links to node 0 which doesn't exist. Shouldn't actually ever happen but it does. FIXME: file a ticket for this
+ nodes_to_fetch = (list_of_way_nodes.uniq - node_ids) - [0]
- # get missing nodes if there are any
- nodes += Node.find(missing_nodes) if missing_nodes.length > 0
+ nodes += Node.includes(:node_tags).find(nodes_to_fetch) unless nodes_to_fetch.empty?
- doc = OSM::API.new.get_xml_doc
+ visible_nodes = {}
+ changeset_cache = {}
+ user_display_name_cache = {}
- # 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.
+ nodes.each do |node|
+ if node.visible?
+ doc.root << node.to_xml_node(changeset_cache, user_display_name_cache)
+ visible_nodes[node.id] = node
+ end
+ end
- # seg_ids = way_segments.collect {|way_segment| way_segment.segment_id }
+ way_ids = []
+ ways.each do |way|
+ if way.visible?
+ doc.root << way.to_xml_node(visible_nodes, changeset_cache, user_display_name_cache)
+ way_ids << way.id
+ end
+ end
- list_of_way_segs = ways.collect {|way| way.way_segments}
- list_of_way_segs.flatten!
+ relations = Relation.nodes(visible_nodes.keys).visible +
+ Relation.ways(way_ids).visible
- list_of_way_segments = list_of_way_segs.collect { |way_seg| way_seg.segment_id }
+ # we do not normally return the "other" partners referenced by an relation,
+ # e.g. if we return a way A that is referenced by relation X, and there's
+ # another way B also referenced, that is not returned. But we do make
+ # an exception for cases where an relation references another *relation*;
+ # in that case we return that as well (but we don't go recursive here)
+ relations += Relation.relations(relations.collect(&:id)).visible
+ # this "uniq" may be slightly inefficient; it may be better to first collect and output
+ # all node-related relations, then find the *not yet covered* way-related ones etc.
+ relations.uniq.each do |relation|
+ doc.root << relation.to_xml_node(changeset_cache, user_display_name_cache)
end
- segments_to_fetch = list_of_way_segments.uniq - segment_ids
+ response.headers["Content-Disposition"] = "attachment; filename=\"map.osm\""
- if segments_to_fetch.length > 0
- segments += Segment.find(segments_to_fetch)
+ render :xml => doc.to_s
+ end
+
+ # Get a list of the tiles that have changed within a specified time
+ # period
+ def changes
+ zoom = (params[:zoom] || "12").to_i
+
+ if params.include?(:start) && params.include?(:end)
+ starttime = Time.parse(params[:start])
+ endtime = Time.parse(params[:end])
+ else
+ hours = (params[:hours] || "1").to_i.hours
+ endtime = Time.now.getutc
+ starttime = endtime - hours
end
- # get more nodes
- #
+ if zoom >= 1 && zoom <= 16 &&
+ endtime > starttime && endtime - starttime <= 24.hours
+ mask = (1 << zoom) - 1
- segments_nodes = segments.collect {|segment| segment.node_a }
- segments_nodes += segments.collect {|segment| segment.node_b }
+ tiles = Node.where(:timestamp => starttime..endtime).group("maptile_for_point(latitude, longitude, #{zoom})").count
- node_ids_a = nodes.collect {|node| node.id }
+ doc = OSM::API.new.get_xml_doc
+ changes = XML::Node.new "changes"
+ changes["starttime"] = starttime.xmlschema
+ changes["endtime"] = endtime.xmlschema
- nodes_to_get = segments_nodes - node_ids_a
- nodes += Node.find(nodes_to_get) if nodes_to_get.length > 0
+ tiles.each do |tile, count|
+ x = (tile.to_i >> zoom) & mask
+ y = tile.to_i & mask
- visible_nodes = {}
- user_display_name_cache = {}
+ t = XML::Node.new "tile"
+ t["x"] = x.to_s
+ t["y"] = y.to_s
+ t["z"] = zoom.to_s
+ t["changes"] = count.to_s
- nodes.each do |node|
- if node.visible?
- doc.root << node.to_xml_node(user_display_name_cache)
- visible_nodes[node.id] = node
+ changes << t
end
- end
- visible_segments = {}
+ doc.root << changes
- 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
+ render :xml => doc.to_s
+ else
+ render :plain => "Requested zoom is invalid, or the supplied start is after the end time, or the start duration is more than 24 hours", :status => :bad_request
end
+ 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
+ # External apps that use the api are able to query the api to find out some
+ # parameters of the API. It currently returns:
+ # * minimum and maximum API versions that can be used.
+ # * maximum area that can be requested in a bbox request in square degrees
+ # * number of tracepoints that are returned in each tracepoints page
+ def capabilities
+ @database_status = database_status
+ @api_status = api_status
+ @gpx_status = gpx_status
+ end
+ # External apps that use the api are able to query which permissions
+ # they have. This currently returns a list of permissions granted to the current user:
+ # * if authenticated via OAuth, this list will contain all permissions granted by the user to the access_token.
+ # * if authenticated via basic auth all permissions are granted, so the list will contain all permissions.
+ # * unauthenticated users have no permissions, so the list will be empty.
+ def permissions
+ @permissions = if current_token.present?
+ ClientApplication.all_permissions.select { |p| current_token.read_attribute(p) }
+ elsif current_user
+ ClientApplication.all_permissions
+ else
+ []
+ end
end
end
projects / rails.git / blobdiff