1 class ApiController < ApplicationController
3 skip_before_filter :verify_authenticity_token
4 before_filter :check_api_readable, :except => [:capabilities]
5 before_filter :setup_user_auth, :only => [:permissions]
6 after_filter :compress_output
7 around_filter :api_call_handle_error, :api_call_timeout
9 # Get an XML response containing a list of tracepoints that have been uploaded
10 # within the specified bounding box, and in the specified page.
12 #retrieve the page number
13 page = params['page'].to_s.to_i
16 report_error("Page number must be greater than or equal to 0")
20 offset = page * TRACEPOINTS_PER_PAGE
23 # check boundary is sane and area within defined
24 # see /config/application.yml
26 bbox = BoundingBox.from_bbox_params(params)
29 rescue Exception => err
30 report_error(err.message)
35 points = Tracepoint.bbox(bbox).offset(offset).limit(TRACEPOINTS_PER_PAGE).order("gpx_id DESC, trackid ASC, timestamp ASC")
37 doc = XML::Document.new
38 doc.encoding = XML::Encoding::UTF_8
39 root = XML::Node.new 'gpx'
40 root['version'] = '1.0'
41 root['creator'] = 'OpenStreetMap.org'
42 root['xmlns'] = "http://www.topografix.com/GPX/1/0"
46 # initialise these variables outside of the loop so that they
47 # stay in scope and don't get free'd up by the GC during the
58 points.each do |point|
59 if gpx_id != point.gpx_id
62 gpx_file = Trace.find(gpx_id)
64 if gpx_file.trackable?
65 track = XML::Node.new 'trk'
69 if gpx_file.identifiable?
70 track << (XML::Node.new("name") << gpx_file.name)
71 track << (XML::Node.new("desc") << gpx_file.description)
72 track << (XML::Node.new("url") << url_for(:controller => 'trace', :action => 'view', :display_name => gpx_file.user.display_name, :id => gpx_file.id))
75 # use the anonymous track segment if the user hasn't allowed
76 # their GPX points to be tracked.
79 anon_track = XML::Node.new 'trk'
80 doc.root << anon_track
86 if trackid != point.trackid
87 if gpx_file.trackable?
88 trkseg = XML::Node.new 'trkseg'
90 trackid = point.trackid
93 anon_trkseg = XML::Node.new 'trkseg'
94 anon_track << anon_trkseg
100 trkseg << point.to_xml_node(timestamps)
103 response.headers["Content-Disposition"] = "attachment; filename=\"tracks.gpx\""
105 render :text => doc.to_s, :content_type => "text/xml"
108 # This is probably the most common call of all. It is used for getting the
109 # OSM data for a specified bounding box, usually for editing. First the
110 # bounding box (bbox) is checked to make sure that it is sane. All nodes
111 # are searched, then all the ways that reference those nodes are found.
112 # All Nodes that are referenced by those ways are fetched and added to the list
114 # Then all the relations that reference the already found nodes and ways are
115 # fetched. All the nodes and ways that are referenced by those ways are then
116 # fetched. Finally all the xml is returned.
118 # Figure out the bbox
119 # check boundary is sane and area within defined
120 # see /config/application.yml
122 bbox = BoundingBox.from_bbox_params(params)
123 bbox.check_boundaries
125 rescue Exception => err
126 report_error(err.message)
130 @nodes = Node.bbox(bbox).where(:visible => true).includes(:node_tags).limit(MAX_NUMBER_OF_NODES+1)
131 # get all the nodes, by tag not yet working, waiting for change from NickB
132 # need to be @nodes (instance var) so tests in /spec can be performed
133 #@nodes = Node.search(bbox, params[:tag])
135 node_ids = @nodes.collect(&:id)
136 if node_ids.length > MAX_NUMBER_OF_NODES
137 report_error("You requested too many nodes (limit is #{MAX_NUMBER_OF_NODES}). Either request a smaller area, or use planet.osm")
140 if node_ids.length == 0
141 render :text => "<osm version='#{API_VERSION}' generator='#{GENERATOR}'></osm>", :content_type => "text/xml"
145 doc = OSM::API.new.get_xml_doc
148 doc.root << bbox.add_bounds_to(XML::Node.new 'bounds')
151 # find which ways are needed
153 if node_ids.length > 0
154 way_nodes = WayNode.find_all_by_node_id(node_ids)
155 way_ids = way_nodes.collect { |way_node| way_node.id[0] }
156 ways = Way.find(way_ids, :include => [:way_nodes, :way_tags])
158 list_of_way_nodes = ways.collect { |way|
159 way.way_nodes.collect { |way_node| way_node.node_id }
161 list_of_way_nodes.flatten!
164 list_of_way_nodes = Array.new
167 # - [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
168 nodes_to_fetch = (list_of_way_nodes.uniq - node_ids) - [0]
170 if nodes_to_fetch.length > 0
171 @nodes += Node.includes(:node_tags).find(nodes_to_fetch)
176 user_display_name_cache = {}
178 @nodes.each do |node|
180 doc.root << node.to_xml_node(changeset_cache, user_display_name_cache)
181 visible_nodes[node.id] = node
188 doc.root << way.to_xml_node(visible_nodes, changeset_cache, user_display_name_cache)
193 relations = Relation.nodes(visible_nodes.keys).visible +
194 Relation.ways(way_ids).visible
196 # we do not normally return the "other" partners referenced by an relation,
197 # e.g. if we return a way A that is referenced by relation X, and there's
198 # another way B also referenced, that is not returned. But we do make
199 # an exception for cases where an relation references another *relation*;
200 # in that case we return that as well (but we don't go recursive here)
201 relations += Relation.relations(relations.collect { |r| r.id }).visible
203 # this "uniq" may be slightly inefficient; it may be better to first collect and output
204 # all node-related relations, then find the *not yet covered* way-related ones etc.
205 relations.uniq.each do |relation|
206 doc.root << relation.to_xml_node(changeset_cache, user_display_name_cache)
209 response.headers["Content-Disposition"] = "attachment; filename=\"map.osm\""
211 render :text => doc.to_s, :content_type => "text/xml"
214 # Get a list of the tiles that have changed within a specified time
217 zoom = (params[:zoom] || '12').to_i
219 if params.include?(:start) and params.include?(:end)
220 starttime = Time.parse(params[:start])
221 endtime = Time.parse(params[:end])
223 hours = (params[:hours] || '1').to_i.hours
224 endtime = Time.now.getutc
225 starttime = endtime - hours
228 if zoom >= 1 and zoom <= 16 and
229 endtime > starttime and endtime - starttime <= 24.hours
230 mask = (1 << zoom) - 1
232 tiles = Node.where(:timestamp => starttime .. endtime).group("maptile_for_point(latitude, longitude, #{zoom})").count
234 doc = OSM::API.new.get_xml_doc
235 changes = XML::Node.new 'changes'
236 changes["starttime"] = starttime.xmlschema
237 changes["endtime"] = endtime.xmlschema
239 tiles.each do |tile, count|
240 x = (tile.to_i >> zoom) & mask
243 t = XML::Node.new 'tile'
247 t["changes"] = count.to_s
254 render :text => doc.to_s, :content_type => "text/xml"
256 render :text => "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
260 # External apps that use the api are able to query the api to find out some
261 # parameters of the API. It currently returns:
262 # * minimum and maximum API versions that can be used.
263 # * maximum area that can be requested in a bbox request in square degrees
264 # * number of tracepoints that are returned in each tracepoints page
266 doc = OSM::API.new.get_xml_doc
268 api = XML::Node.new 'api'
269 version = XML::Node.new 'version'
270 version['minimum'] = "#{API_VERSION}";
271 version['maximum'] = "#{API_VERSION}";
273 area = XML::Node.new 'area'
274 area['maximum'] = MAX_REQUEST_AREA.to_s;
276 tracepoints = XML::Node.new 'tracepoints'
277 tracepoints['per_page'] = TRACEPOINTS_PER_PAGE.to_s
279 waynodes = XML::Node.new 'waynodes'
280 waynodes['maximum'] = MAX_NUMBER_OF_WAY_NODES.to_s
282 changesets = XML::Node.new 'changesets'
283 changesets['maximum_elements'] = Changeset::MAX_ELEMENTS.to_s
285 timeout = XML::Node.new 'timeout'
286 timeout['seconds'] = API_TIMEOUT.to_s
291 render :text => doc.to_s, :content_type => "text/xml"
294 # External apps that use the api are able to query which permissions
295 # they have. This currently returns a list of permissions granted to the current user:
296 # * if authenticated via OAuth, this list will contain all permissions granted by the user to the access_token.
297 # * if authenticated via basic auth all permissions are granted, so the list will contain all permissions.
298 # * unauthenticated users have no permissions, so the list will be empty.
301 when current_token.present?
302 ClientApplication.all_permissions.select { |p| current_token.read_attribute(p) }
304 ClientApplication.all_permissions