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
8 before_action :setup_user_auth, :only => [:permissions]
9 around_action :api_call_handle_error, :api_call_timeout
11 # This is probably the most common call of all. It is used for getting the
12 # OSM data for a specified bounding box, usually for editing. First the
13 # bounding box (bbox) is checked to make sure that it is sane. All nodes
14 # are searched, then all the ways that reference those nodes are found.
15 # All Nodes that are referenced by those ways are fetched and added to the list
17 # Then all the relations that reference the already found nodes and ways are
18 # fetched. All the nodes and ways that are referenced by those ways are then
19 # fetched. Finally all the xml is returned.
22 # check boundary is sane and area within defined
23 # see /config/application.yml
25 bbox = BoundingBox.from_bbox_params(params)
28 rescue StandardError => err
29 report_error(err.message)
33 nodes = Node.bbox(bbox).where(:visible => true).includes(:node_tags).limit(MAX_NUMBER_OF_NODES + 1)
35 node_ids = nodes.collect(&:id)
36 if node_ids.length > MAX_NUMBER_OF_NODES
37 report_error("You requested too many nodes (limit is #{MAX_NUMBER_OF_NODES}). Either request a smaller area, or use planet.osm")
41 doc = OSM::API.new.get_xml_doc
44 doc.root << bbox.add_bounds_to(XML::Node.new("bounds"))
47 # find which ways are needed
50 list_of_way_nodes = []
52 way_nodes = WayNode.where(:node_id => node_ids)
53 way_ids = way_nodes.collect { |way_node| way_node.id[0] }
54 ways = Way.preload(:way_nodes, :way_tags).find(way_ids)
56 list_of_way_nodes = ways.collect do |way|
57 way.way_nodes.collect(&:node_id)
59 list_of_way_nodes.flatten!
62 # - [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
63 nodes_to_fetch = (list_of_way_nodes.uniq - node_ids) - [0]
65 nodes += Node.includes(:node_tags).find(nodes_to_fetch) unless nodes_to_fetch.empty?
69 user_display_name_cache = {}
73 doc.root << node.to_xml_node(changeset_cache, user_display_name_cache)
74 visible_nodes[node.id] = node
81 doc.root << way.to_xml_node(visible_nodes, changeset_cache, user_display_name_cache)
86 relations = Relation.nodes(visible_nodes.keys).visible +
87 Relation.ways(way_ids).visible
89 # we do not normally return the "other" partners referenced by an relation,
90 # e.g. if we return a way A that is referenced by relation X, and there's
91 # another way B also referenced, that is not returned. But we do make
92 # an exception for cases where an relation references another *relation*;
93 # in that case we return that as well (but we don't go recursive here)
94 relations += Relation.relations(relations.collect(&:id)).visible
96 # this "uniq" may be slightly inefficient; it may be better to first collect and output
97 # all node-related relations, then find the *not yet covered* way-related ones etc.
98 relations.uniq.each do |relation|
99 doc.root << relation.to_xml_node(changeset_cache, user_display_name_cache)
102 response.headers["Content-Disposition"] = "attachment; filename=\"map.osm\""
104 render :xml => doc.to_s
107 # Get a list of the tiles that have changed within a specified time
110 zoom = (params[:zoom] || "12").to_i
112 if params.include?(:start) && params.include?(:end)
113 starttime = Time.parse(params[:start])
114 endtime = Time.parse(params[:end])
116 hours = (params[:hours] || "1").to_i.hours
117 endtime = Time.now.getutc
118 starttime = endtime - hours
121 if zoom >= 1 && zoom <= 16 &&
122 endtime > starttime && endtime - starttime <= 24.hours
123 mask = (1 << zoom) - 1
125 tiles = Node.where(:timestamp => starttime..endtime).group("maptile_for_point(latitude, longitude, #{zoom})").count
127 doc = OSM::API.new.get_xml_doc
128 changes = XML::Node.new "changes"
129 changes["starttime"] = starttime.xmlschema
130 changes["endtime"] = endtime.xmlschema
132 tiles.each do |tile, count|
133 x = (tile.to_i >> zoom) & mask
136 t = XML::Node.new "tile"
140 t["changes"] = count.to_s
147 render :xml => doc.to_s
149 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
153 # External apps that use the api are able to query which permissions
154 # they have. This currently returns a list of permissions granted to the current user:
155 # * if authenticated via OAuth, this list will contain all permissions granted by the user to the access_token.
156 # * if authenticated via basic auth all permissions are granted, so the list will contain all permissions.
157 # * unauthenticated users have no permissions, so the list will be empty.
159 @permissions = if current_token.present?
160 ClientApplication.all_permissions.select { |p| current_token.read_attribute(p) }
162 ClientApplication.all_permissions