class ApiController < ApplicationController
+ skip_before_action :verify_authenticity_token
+ before_action :api_deny_access_handler
+ authorize_resource :class => false
+
+ before_action :check_api_readable
+ before_action :setup_user_auth, :only => [:permissions]
+ around_action :api_call_handle_error, :api_call_timeout
+
+ # 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
+
+ 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
+
+ doc = OSM::API.new.get_xml_doc
+
+ # add bounds
+ doc.root << bbox.add_bounds_to(XML::Node.new("bounds"))
+
+ # 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
+
+ # - [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]
+
+ nodes += Node.includes(:node_tags).find(nodes_to_fetch) unless nodes_to_fetch.empty?
+
+ visible_nodes = {}
+ changeset_cache = {}
+ user_display_name_cache = {}
+
+ 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
+
+ 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
+ relations = Relation.nodes(visible_nodes.keys).visible +
+ Relation.ways(way_ids).visible
- doc = XML::Document.new
- doc.encoding = 'UTF-8'
- root = XML::Node.new 'osm'
- root['version'] = '0.4'
- root['generator'] = 'OpenStreetMap server'
- doc.root = root
-
- render :text => doc.to_s
-
- #el1 = XML::Node.new 'node'
- #el1['id'] = self.id.to_s
- #el1['lat'] = self.latitude.to_s
- #el1['lon'] = self.longitude.to_s
- #Node.split_tags(el1, self.tags)
- #el1['visible'] = self.visible.to_s
- #el1['timestamp'] = self.timestamp.xmlschema
- #root << el1
+ # 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
+
+ response.headers["Content-Disposition"] = "attachment; filename=\"map.osm\""
+
+ 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
+
+ if zoom >= 1 && zoom <= 16 &&
+ endtime > starttime && endtime - starttime <= 24.hours
+ mask = (1 << zoom) - 1
+
+ tiles = Node.where(:timestamp => starttime..endtime).group("maptile_for_point(latitude, longitude, #{zoom})").count
+
+ doc = OSM::API.new.get_xml_doc
+ changes = XML::Node.new "changes"
+ changes["starttime"] = starttime.xmlschema
+ changes["endtime"] = endtime.xmlschema
+ tiles.each do |tile, count|
+ x = (tile.to_i >> zoom) & mask
+ y = tile.to_i & mask
+ 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
+
+ changes << t
+ end
+
+ doc.root << changes
+
+ 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
+
+ # 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