1 class ApiController < ApplicationController
2 skip_before_action :verify_authenticity_token
3 before_action :api_deny_access_handler
5 authorize_resource :class => false
7 before_action :check_api_readable, :except => [:capabilities]
8 before_action :setup_user_auth, :only => [:permissions]
9 around_action :api_call_handle_error, :api_call_timeout
11 # Get an XML response containing a list of tracepoints that have been uploaded
12 # within the specified bounding box, and in the specified page.
14 # retrieve the page number
15 page = params["page"].to_s.to_i
18 report_error("Page number must be greater than or equal to 0")
22 offset = page * TRACEPOINTS_PER_PAGE
25 # check boundary is sane and area within defined
26 # see /config/application.yml
28 bbox = BoundingBox.from_bbox_params(params)
31 rescue StandardError => err
32 report_error(err.message)
37 ordered_points = Tracepoint.bbox(bbox).joins(:trace).where(:gpx_files => { :visibility => %w[trackable identifiable] }).order("gpx_id DESC, trackid ASC, timestamp ASC")
38 unordered_points = Tracepoint.bbox(bbox).joins(:trace).where(:gpx_files => { :visibility => %w[public private] }).order("gps_points.latitude", "gps_points.longitude", "gps_points.timestamp")
39 points = ordered_points.union_all(unordered_points).offset(offset).limit(TRACEPOINTS_PER_PAGE)
41 doc = XML::Document.new
42 doc.encoding = XML::Encoding::UTF_8
43 root = XML::Node.new "gpx"
44 root["version"] = "1.0"
45 root["creator"] = "OpenStreetMap.org"
46 root["xmlns"] = "http://www.topografix.com/GPX/1/0"
50 # initialise these variables outside of the loop so that they
51 # stay in scope and don't get free'd up by the GC during the
62 points.each do |point|
63 if gpx_id != point.gpx_id
66 gpx_file = Trace.find(gpx_id)
68 if gpx_file.trackable?
69 track = XML::Node.new "trk"
73 if gpx_file.identifiable?
74 track << (XML::Node.new("name") << gpx_file.name)
75 track << (XML::Node.new("desc") << gpx_file.description)
76 track << (XML::Node.new("url") << url_for(:controller => "traces", :action => "show", :display_name => gpx_file.user.display_name, :id => gpx_file.id))
79 # use the anonymous track segment if the user hasn't allowed
80 # their GPX points to be tracked.
83 anon_track = XML::Node.new "trk"
84 doc.root << anon_track
90 if trackid != point.trackid
91 if gpx_file.trackable?
92 trkseg = XML::Node.new "trkseg"
94 trackid = point.trackid
97 anon_trkseg = XML::Node.new "trkseg"
98 anon_track << anon_trkseg
104 trkseg << point.to_xml_node(timestamps)
107 response.headers["Content-Disposition"] = "attachment; filename=\"tracks.gpx\""
109 render :xml => doc.to_s
112 # This is probably the most common call of all. It is used for getting the
113 # OSM data for a specified bounding box, usually for editing. First the
114 # bounding box (bbox) is checked to make sure that it is sane. All nodes
115 # are searched, then all the ways that reference those nodes are found.
116 # All Nodes that are referenced by those ways are fetched and added to the list
118 # Then all the relations that reference the already found nodes and ways are
119 # fetched. All the nodes and ways that are referenced by those ways are then
120 # fetched. Finally all the xml is returned.
122 # Figure out the bbox
123 # check boundary is sane and area within defined
124 # see /config/application.yml
126 bbox = BoundingBox.from_bbox_params(params)
127 bbox.check_boundaries
129 rescue StandardError => err
130 report_error(err.message)
134 nodes = Node.bbox(bbox).where(:visible => true).includes(:node_tags).limit(MAX_NUMBER_OF_NODES + 1)
136 node_ids = nodes.collect(&:id)
137 if node_ids.length > MAX_NUMBER_OF_NODES
138 report_error("You requested too many nodes (limit is #{MAX_NUMBER_OF_NODES}). Either request a smaller area, or use planet.osm")
142 doc = OSM::API.new.get_xml_doc
145 doc.root << bbox.add_bounds_to(XML::Node.new("bounds"))
148 # find which ways are needed
151 list_of_way_nodes = []
153 way_nodes = WayNode.where(:node_id => node_ids)
154 way_ids = way_nodes.collect { |way_node| way_node.id[0] }
155 ways = Way.preload(:way_nodes, :way_tags).find(way_ids)
157 list_of_way_nodes = ways.collect do |way|
158 way.way_nodes.collect(&:node_id)
160 list_of_way_nodes.flatten!
163 # - [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
164 nodes_to_fetch = (list_of_way_nodes.uniq - node_ids) - [0]
166 nodes += Node.includes(:node_tags).find(nodes_to_fetch) unless nodes_to_fetch.empty?
170 user_display_name_cache = {}
174 doc.root << node.to_xml_node(changeset_cache, user_display_name_cache)
175 visible_nodes[node.id] = node
182 doc.root << way.to_xml_node(visible_nodes, changeset_cache, user_display_name_cache)
187 relations = Relation.nodes(visible_nodes.keys).visible +
188 Relation.ways(way_ids).visible
190 # we do not normally return the "other" partners referenced by an relation,
191 # e.g. if we return a way A that is referenced by relation X, and there's
192 # another way B also referenced, that is not returned. But we do make
193 # an exception for cases where an relation references another *relation*;
194 # in that case we return that as well (but we don't go recursive here)
195 relations += Relation.relations(relations.collect(&:id)).visible
197 # this "uniq" may be slightly inefficient; it may be better to first collect and output
198 # all node-related relations, then find the *not yet covered* way-related ones etc.
199 relations.uniq.each do |relation|
200 doc.root << relation.to_xml_node(changeset_cache, user_display_name_cache)
203 response.headers["Content-Disposition"] = "attachment; filename=\"map.osm\""
205 render :xml => doc.to_s
208 # Get a list of the tiles that have changed within a specified time
211 zoom = (params[:zoom] || "12").to_i
213 if params.include?(:start) && params.include?(:end)
214 starttime = Time.parse(params[:start])
215 endtime = Time.parse(params[:end])
217 hours = (params[:hours] || "1").to_i.hours
218 endtime = Time.now.getutc
219 starttime = endtime - hours
222 if zoom >= 1 && zoom <= 16 &&
223 endtime > starttime && endtime - starttime <= 24.hours
224 mask = (1 << zoom) - 1
226 tiles = Node.where(:timestamp => starttime..endtime).group("maptile_for_point(latitude, longitude, #{zoom})").count
228 doc = OSM::API.new.get_xml_doc
229 changes = XML::Node.new "changes"
230 changes["starttime"] = starttime.xmlschema
231 changes["endtime"] = endtime.xmlschema
233 tiles.each do |tile, count|
234 x = (tile.to_i >> zoom) & mask
237 t = XML::Node.new "tile"
241 t["changes"] = count.to_s
248 render :xml => doc.to_s
250 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
254 # External apps that use the api are able to query the api to find out some
255 # parameters of the API. It currently returns:
256 # * minimum and maximum API versions that can be used.
257 # * maximum area that can be requested in a bbox request in square degrees
258 # * number of tracepoints that are returned in each tracepoints page
260 @database_status = database_status
261 @api_status = api_status
262 @gpx_status = gpx_status
265 # External apps that use the api are able to query which permissions
266 # they have. This currently returns a list of permissions granted to the current user:
267 # * if authenticated via OAuth, this list will contain all permissions granted by the user to the access_token.
268 # * if authenticated via basic auth all permissions are granted, so the list will contain all permissions.
269 # * unauthenticated users have no permissions, so the list will be empty.
271 @permissions = if current_token.present?
272 ClientApplication.all_permissions.select { |p| current_token.read_attribute(p) }
274 ClientApplication.all_permissions