+++ /dev/null
-# amf_controller is a semi-standalone API for Flash clients, particularly
-# Potlatch. All interaction between Potlatch (as a .SWF application) and the
-# OSM database takes place using this controller. Messages are
-# encoded in the Actionscript Message Format (AMF).
-#
-# Helper functions are in /lib/potlatch.rb
-#
-# Author:: editions Systeme D / Richard Fairhurst 2004-2008
-# Licence:: public domain.
-#
-# == General structure
-#
-# Apart from the amf_read and amf_write methods (which distribute the requests
-# from the AMF message), each method generally takes arguments in the order
-# they were sent by the Potlatch SWF. Do not assume typing has been preserved.
-# Methods all return an array to the SWF.
-#
-# == API 0.6
-#
-# Note that this requires a patched version of composite_primary_keys 1.1.0
-# (see http://groups.google.com/group/compositekeys/t/a00e7562b677e193)
-# if you are to run with POTLATCH_USE_SQL=false .
-#
-# == Debugging
-#
-# Any method that returns a status code (0 for ok) can also send:
-# return(-1,"message") <-- just puts up a dialogue
-# return(-2,"message") <-- also asks the user to e-mail me
-# return(-3,["type",v],id) <-- version conflict
-# return(-4,"type",id) <-- object not found
-# -5 indicates the method wasn't called (due to a previous error)
-#
-# To write to the Rails log, use logger.info("message").
-
-# Remaining issues:
-# * version conflict when POIs and ways are reverted
-
-module Api
- class AmfController < ApiController
- require "timeout"
-
- include Potlatch
-
- before_action :check_api_writable
-
- # AMF Controller implements its own authentication and authorization checks
- # completely independently of the rest of the codebase, so best just to let
- # it keep doing its own thing.
- skip_authorization_check
-
- # Main AMF handlers: process the raw AMF string (using AMF library) and
- # calls each action (private method) accordingly.
-
- def amf_read
- self.status = :ok
- self.content_type = Mime[:amf]
- self.response_body = Dispatcher.new(request.raw_post) do |message, *args|
- logger.info("Executing AMF #{message}(#{args.join(',')})")
-
- case message
- when "getpresets" then result = getpresets(*args)
- when "whichways" then result = whichways(*args)
- when "whichways_deleted" then result = whichways_deleted(*args)
- when "getway" then result = getway(args[0].to_i)
- when "getrelation" then result = getrelation(args[0].to_i)
- when "getway_old" then result = getway_old(args[0].to_i, args[1])
- when "getway_history" then result = getway_history(args[0].to_i)
- when "getnode_history" then result = getnode_history(args[0].to_i)
- when "findgpx" then result = findgpx(*args)
- when "findrelations" then result = findrelations(*args)
- when "getpoi" then result = getpoi(*args)
- end
-
- result
- end
- end
-
- def amf_write
- renumberednodes = {} # Shared across repeated putways
- renumberedways = {} # Shared across repeated putways
- err = false # Abort batch on error
-
- self.status = :ok
- self.content_type = Mime[:amf]
- self.response_body = Dispatcher.new(request.raw_post) do |message, *args|
- logger.info("Executing AMF #{message}")
-
- if err
- result = [-5, nil]
- else
- case message
- when "putway"
- orn = renumberednodes.dup
- result = putway(renumberednodes, *args)
- result[4] = renumberednodes.reject { |k, _v| orn.key?(k) }
- renumberedways[result[2]] = result[3] if result[0].zero? && result[2] != result[3]
- when "putrelation"
- result = putrelation(renumberednodes, renumberedways, *args)
- when "deleteway"
- result = deleteway(*args)
- when "putpoi"
- result = putpoi(*args)
- renumberednodes[result[2]] = result[3] if result[0].zero? && result[2] != result[3]
- when "startchangeset"
- result = startchangeset(*args)
- end
-
- err = true if result[0] == -3 # If a conflict is detected, don't execute any more writes
- end
-
- result
- end
- end
-
- private
-
- def amf_handle_error(call, rootobj, rootid)
- yield
- rescue OSM::APIAlreadyDeletedError => e
- [-4, e.object, e.object_id]
- rescue OSM::APIVersionMismatchError => e
- [-3, [rootobj, rootid], [e.type.downcase, e.id, e.latest]]
- rescue OSM::APIUserChangesetMismatchError => e
- [-2, e.to_s]
- rescue OSM::APIBadBoundingBox => e
- [-2, "Sorry - I can't get the map for that area. The server said: #{e}"]
- rescue OSM::APIError => e
- [-1, e.to_s]
- rescue StandardError => e
- [-2, "An unusual error happened (in #{call}). The server said: #{e}"]
- end
-
- def amf_handle_error_with_timeout(call, rootobj, rootid, &block)
- amf_handle_error(call, rootobj, rootid) do
- Timeout.timeout(Settings.api_timeout, OSM::APITimeoutError, &block)
- end
- end
-
- # Start new changeset
- # Returns success_code,success_message,changeset id
-
- def startchangeset(usertoken, cstags, closeid, closecomment, opennew)
- amf_handle_error("'startchangeset'", nil, nil) do
- user = getuser(usertoken)
- return -1, "You are not logged in, so Potlatch can't write any changes to the database." unless user
- return -1, t("application.setup_user_auth.blocked") if user.blocks.active.exists?
- return -1, "You must accept the contributor terms before you can edit." if user.terms_agreed.nil?
-
- if cstags
- return -1, "One of the tags is invalid. Linux users may need to upgrade to Flash Player 10.1." unless tags_ok(cstags)
-
- cstags = strip_non_xml_chars cstags
- end
-
- # close previous changeset and add comment
- if closeid
- cs = Changeset.find(closeid.to_i)
- cs.set_closed_time_now
- if cs.user_id != user.id
- raise OSM::APIUserChangesetMismatchError
- elsif closecomment.empty?
- cs.save!
- else
- cs.tags["comment"] = closecomment
- # in case closecomment has chars not allowed in xml
- cs.tags = strip_non_xml_chars cs.tags
- cs.save_with_tags!
- end
- end
-
- # open a new changeset
- if opennew.nonzero?
- cs = Changeset.new
- cs.tags = cstags
- cs.user_id = user.id
- unless closecomment.empty?
- cs.tags["comment"] = closecomment
- # in case closecomment has chars not allowed in xml
- cs.tags = strip_non_xml_chars cs.tags
- end
- # smsm1 doesn't like the next two lines and thinks they need to be abstracted to the model more/better
- cs.created_at = Time.now.getutc
- cs.closed_at = cs.created_at + Changeset::IDLE_TIMEOUT
- cs.save_with_tags!
- return [0, "", cs.id]
- else
- return [0, "", nil]
- end
- end
- end
-
- # Return presets (default tags, localisation etc.):
- # uses POTLATCH_PRESETS global, set up in OSM::Potlatch.
-
- def getpresets(usertoken, _lang)
- user = getuser(usertoken)
-
- langs = if user && !user.languages.empty?
- Locale.list(user.languages)
- else
- Locale.list(http_accept_language.user_preferred_languages)
- end
-
- lang = getlocales.preferred(langs)
- (real_lang, localised) = getlocalized(lang.to_s)
-
- # Tell Potlatch what language it's using
- localised["__potlatch_locale"] = real_lang
-
- # Get help from i18n but delete it so we won't pass it around
- # twice for nothing
- help = localised["help_html"]
- localised.delete("help_html")
-
- # Populate icon names
- POTLATCH_PRESETS[10].each do |id|
- POTLATCH_PRESETS[11][id] = localised["preset_icon_#{id}"]
- localised.delete("preset_icon_#{id}")
- end
-
- POTLATCH_PRESETS + [localised, help]
- end
-
- def getlocalized(lang)
- # What we end up actually using. Reported in Potlatch's created_by=* string
- loaded_lang = "en"
-
- # Load English defaults
- en = YAML.safe_load(File.open(Rails.root.join("config/potlatch/locales/en.yml")))["en"]
-
- if lang == "en"
- [loaded_lang, en]
- else
- # Use English as a fallback
- begin
- other = YAML.safe_load(File.open(Rails.root.join("config/potlatch/locales/#{lang}.yml")))[lang]
- loaded_lang = lang
- rescue StandardError
- other = en
- end
-
- # We have to return a flat list and some of the keys won't be
- # translated (probably)
- [loaded_lang, en.merge(other)]
- end
- end
-
- ##
- # Find all the ways, POI nodes (i.e. not part of ways), and relations
- # in a given bounding box. Nodes are returned in full; ways and relations
- # are IDs only.
- #
- # return is of the form:
- # [success_code, success_message,
- # [[way_id, way_version], ...],
- # [[node_id, lat, lon, [tags, ...], node_version], ...],
- # [[rel_id, rel_version], ...]]
- # where the ways are any visible ways which refer to any visible
- # nodes in the bbox, nodes are any visible nodes in the bbox but not
- # used in any way, rel is any relation which refers to either a way
- # or node that we're returning.
- def whichways(xmin, ymin, xmax, ymax)
- amf_handle_error_with_timeout("'whichways'", nil, nil) do
- enlarge = [(xmax - xmin) / 8, 0.01].min
- xmin -= enlarge
- ymin -= enlarge
- xmax += enlarge
- ymax += enlarge
-
- # check boundary is sane and area within defined
- # see /config/application.yml
- bbox = BoundingBox.new(xmin, ymin, xmax, ymax)
- bbox.check_boundaries
- bbox.check_size
-
- if POTLATCH_USE_SQL
- ways = sql_find_ways_in_area(bbox)
- points = sql_find_pois_in_area(bbox)
- relations = sql_find_relations_in_area_and_ways(bbox, ways.collect { |x| x[0] })
- else
- # find the way ids in an area
- nodes_in_area = Node.bbox(bbox).visible.includes(:ways)
- ways = nodes_in_area.inject([]) do |sum, node|
- visible_ways = node.ways.select(&:visible?)
- sum + visible_ways.collect { |w| [w.id, w.version] }
- end.uniq
- ways.delete([])
-
- # find the node ids in an area that aren't part of ways
- nodes_not_used_in_area = nodes_in_area.select { |node| node.ways.empty? }
- points = nodes_not_used_in_area.collect { |n| [n.id, n.lon, n.lat, n.tags, n.version] }.uniq
-
- # find the relations used by those nodes and ways
- relations = Relation.nodes(nodes_in_area.collect(&:id)).visible +
- Relation.ways(ways.collect { |w| w[0] }).visible
- relations = relations.collect { |relation| [relation.id, relation.version] }.uniq
- end
-
- [0, "", ways, points, relations]
- end
- end
-
- # Find deleted ways in current bounding box (similar to whichways, but ways
- # with a deleted node only - not POIs or relations).
-
- def whichways_deleted(xmin, ymin, xmax, ymax)
- amf_handle_error_with_timeout("'whichways_deleted'", nil, nil) do
- enlarge = [(xmax - xmin) / 8, 0.01].min
- xmin -= enlarge
- ymin -= enlarge
- xmax += enlarge
- ymax += enlarge
-
- # check boundary is sane and area within defined
- # see /config/application.yml
- bbox = BoundingBox.new(xmin, ymin, xmax, ymax)
- bbox.check_boundaries
- bbox.check_size
-
- nodes_in_area = Node.bbox(bbox).joins(:ways_via_history).where(:current_ways => { :visible => false })
- way_ids = nodes_in_area.collect { |node| node.ways_via_history.invisible.collect(&:id) }.flatten.uniq
-
- [0, "", way_ids]
- end
- end
-
- # Get a way including nodes and tags.
- # Returns the way id, a Potlatch-style array of points, a hash of tags, the version number, and the user ID.
-
- def getway(wayid)
- amf_handle_error_with_timeout("'getway' #{wayid}", "way", wayid) do
- if POTLATCH_USE_SQL
- points = sql_get_nodes_in_way(wayid)
- tags = sql_get_tags_in_way(wayid)
- version = sql_get_way_version(wayid)
- uid = sql_get_way_user(wayid)
- else
- # Ideally we would do ":include => :nodes" here but if we do that
- # then rails only seems to return the first copy of a node when a
- # way includes a node more than once
- way = Way.where(:id => wayid).first
-
- # check case where way has been deleted or doesn't exist
- return [-4, "way", wayid] if way.nil? || !way.visible
-
- points = way.nodes.preload(:node_tags).collect do |node|
- nodetags = node.tags
- nodetags.delete("created_by")
- [node.lon, node.lat, node.id, nodetags, node.version]
- end
- tags = way.tags
- version = way.version
- uid = way.changeset.user.id
- end
-
- [0, "", wayid, points, tags, version, uid]
- end
- end
-
- # Get an old version of a way, and all constituent nodes.
- #
- # For undelete (version<0), always uses the most recent version of each node,
- # even if it's moved. For revert (version >= 0), uses the node in existence
- # at the time, generating a new id if it's still visible and has been moved/
- # retagged.
- #
- # Returns:
- # 0. success code,
- # 1. id,
- # 2. array of points,
- # 3. hash of tags,
- # 4. version,
- # 5. is this the current, visible version? (boolean)
-
- def getway_old(id, timestamp)
- amf_handle_error_with_timeout("'getway_old' #{id}, #{timestamp}", "way", id) do
- if timestamp == ""
- # undelete
- old_way = OldWay.where(:visible => true, :way_id => id).unredacted.order("version DESC").first
- points = old_way.get_nodes_undelete unless old_way.nil?
- else
- begin
- # revert
- timestamp = Time.zone.strptime(timestamp.to_s, "%d %b %Y, %H:%M:%S")
- old_way = OldWay.where("way_id = ? AND timestamp <= ?", id, timestamp).unredacted.order("timestamp DESC").first
- unless old_way.nil?
- if old_way.visible
- points = old_way.get_nodes_revert(timestamp)
- else
- return [-1, "Sorry, the way was deleted at that time - please revert to a previous version.", id]
- end
- end
- rescue ArgumentError
- # thrown by date parsing method. leave old_way as nil for
- # the error handler below.
- old_way = nil
- end
- end
-
- if old_way.nil?
- return [-1, "Sorry, the server could not find a way at that time.", id]
- else
- curway = Way.find(id)
- old_way.tags["history"] = "Retrieved from v#{old_way.version}"
- return [0, "", id, points, old_way.tags, curway.version, (curway.version == old_way.version && curway.visible)]
- end
- end
- end
-
- # Find history of a way.
- # Returns 'way', id, and an array of previous versions:
- # - formerly [old_way.version, old_way.timestamp.strftime("%d %b %Y, %H:%M"), old_way.visible ? 1 : 0, user, uid]
- # - now [timestamp,user,uid]
- #
- # Heuristic: Find all nodes that have ever been part of the way;
- # get a list of their revision dates; add revision dates of the way;
- # sort and collapse list (to within 2 seconds); trim all dates before the
- # start date of the way.
-
- def getway_history(wayid)
- revdates = []
- revusers = {}
- Way.find(wayid).old_ways.unredacted.collect do |a|
- revdates.push(a.timestamp)
- revusers[a.timestamp.to_i] = change_user(a) unless revusers.key?(a.timestamp.to_i)
- a.nds.each do |n|
- Node.find(n).old_nodes.unredacted.collect do |o|
- revdates.push(o.timestamp)
- revusers[o.timestamp.to_i] = change_user(o) unless revusers.key?(o.timestamp.to_i)
- end
- end
- end
- waycreated = revdates[0]
- revdates.uniq!
- revdates.sort!
- revdates.reverse!
-
- # Remove any dates (from nodes) before first revision date of way
- revdates.delete_if { |d| d < waycreated }
- # Remove any elements where 2 seconds doesn't elapse before next one
- revdates.delete_if { |d| revdates.include?(d + 1) || revdates.include?(d + 2) }
- # Collect all in one nested array
- revdates.collect! { |d| [(d + 1).strftime("%d %b %Y, %H:%M:%S")] + revusers[d.to_i] }
- revdates.uniq!
-
- ["way", wayid, revdates]
- rescue ActiveRecord::RecordNotFound
- ["way", wayid, []]
- end
-
- # Find history of a node. Returns 'node', id, and an array of previous versions as above.
-
- def getnode_history(nodeid)
- history = Node.find(nodeid).old_nodes.unredacted.reverse.collect do |old_node|
- [(old_node.timestamp + 1).strftime("%d %b %Y, %H:%M:%S")] + change_user(old_node)
- end
- ["node", nodeid, history]
- rescue ActiveRecord::RecordNotFound
- ["node", nodeid, []]
- end
-
- def change_user(obj)
- user_object = obj.changeset.user
- user = user_object.data_public? ? user_object.display_name : "anonymous"
- uid = user_object.data_public? ? user_object.id : 0
- [user, uid]
- end
-
- # Find GPS traces with specified name/id.
- # Returns array listing GPXs, each one comprising id, name and description.
-
- def findgpx(searchterm, usertoken)
- amf_handle_error_with_timeout("'findgpx'", nil, nil) do
- user = getuser(usertoken)
-
- return -1, "You must be logged in to search for GPX traces." unless user
- return -1, t("application.setup_user_auth.blocked") if user.blocks.active.exists?
-
- query = Trace.visible_to(user)
- query = if searchterm.to_i.positive?
- query.where(:id => searchterm.to_i)
- else
- query.where("MATCH(name) AGAINST (?)", searchterm).limit(21)
- end
- gpxs = query.collect do |gpx|
- [gpx.id, gpx.name, gpx.description]
- end
- [0, "", gpxs]
- end
- end
-
- # Get a relation with all tags and members.
- # Returns:
- # 0. success code?
- # 1. object type?
- # 2. relation id,
- # 3. hash of tags,
- # 4. list of members,
- # 5. version.
-
- def getrelation(relid)
- amf_handle_error("'getrelation' #{relid}", "relation", relid) do
- rel = Relation.where(:id => relid).first
-
- return [-4, "relation", relid] if rel.nil? || !rel.visible
-
- [0, "", relid, rel.tags, rel.members, rel.version]
- end
- end
-
- # Find relations with specified name/id.
- # Returns array of relations, each in same form as getrelation.
-
- def findrelations(searchterm)
- rels = []
- if searchterm.to_i.positive?
- rel = Relation.where(:id => searchterm.to_i).first
- rels.push([rel.id, rel.tags, rel.members, rel.version]) if rel&.visible
- else
- RelationTag.where("v like ?", "%#{searchterm}%").limit(11).each do |t|
- rels.push([t.relation.id, t.relation.tags, t.relation.members, t.relation.version]) if t.relation.visible
- end
- end
- rels
- end
-
- # Save a relation.
- # Returns
- # 0. 0 (success),
- # 1. original relation id (unchanged),
- # 2. new relation id,
- # 3. version.
-
- def putrelation(renumberednodes, renumberedways, usertoken, changeset_id, version, relid, tags, members, visible)
- amf_handle_error("'putrelation' #{relid}", "relation", relid) do
- user = getuser(usertoken)
-
- return -1, "You are not logged in, so the relation could not be saved." unless user
- return -1, t("application.setup_user_auth.blocked") if user.blocks.active.exists?
- return -1, "You must accept the contributor terms before you can edit." if user.terms_agreed.nil?
-
- return -1, "One of the tags is invalid. Linux users may need to upgrade to Flash Player 10.1." unless tags_ok(tags)
-
- tags = strip_non_xml_chars tags
-
- relid = relid.to_i
- visible = visible.to_i.nonzero?
-
- new_relation = nil
- relation = nil
- Relation.transaction do
- # create a new relation, or find the existing one
- relation = Relation.find(relid) if relid.positive?
- # We always need a new node, based on the data that has been sent to us
- new_relation = Relation.new
-
- # check the members are all positive, and correctly type
- typedmembers = []
- members.each do |m|
- mid = m[1].to_i
- if mid.negative?
- mid = renumberednodes[mid] if m[0] == "Node"
- mid = renumberedways[mid] if m[0] == "Way"
- end
- typedmembers << [m[0], mid, m[2].delete("\000-\037\ufffe\uffff", "^\011\012\015")] if mid
- end
-
- # assign new contents
- new_relation.members = typedmembers
- new_relation.tags = tags
- new_relation.visible = visible
- new_relation.changeset_id = changeset_id.to_i
- new_relation.version = version
-
- if relid <= 0
- # We're creating the relation
- new_relation.create_with_history(user)
- elsif visible
- # We're updating the relation
- new_relation.id = relid
- relation.update_from(new_relation, user)
- else
- # We're deleting the relation
- new_relation.id = relid
- relation.delete_with_history!(new_relation, user)
- end
- end
-
- if relid <= 0
- return [0, "", relid, new_relation.id, new_relation.version]
- else
- return [0, "", relid, relid, relation.version]
- end
- end
- end
-
- # Save a way to the database, including all nodes. Any nodes in the previous
- # version and no longer used are deleted.
- #
- # Parameters:
- # 0. hash of renumbered nodes (added by amf_controller)
- # 1. current user token (for authentication)
- # 2. current changeset
- # 3. new way version
- # 4. way ID
- # 5. list of nodes in way
- # 6. hash of way tags
- # 7. array of nodes to change (each one is [lon,lat,id,version,tags]),
- # 8. hash of nodes to delete (id->version).
- #
- # Returns:
- # 0. '0' (code for success),
- # 1. message,
- # 2. original way id (unchanged),
- # 3. new way id,
- # 4. hash of renumbered nodes (old id=>new id),
- # 5. way version,
- # 6. hash of changed node versions (node=>version)
- # 7. hash of deleted node versions (node=>version)
-
- def putway(renumberednodes, usertoken, changeset_id, wayversion, originalway, pointlist, attributes, nodes, deletednodes)
- amf_handle_error("'putway' #{originalway}", "way", originalway) do
- # -- Initialise
-
- user = getuser(usertoken)
- return -1, "You are not logged in, so the way could not be saved." unless user
- return -1, t("application.setup_user_auth.blocked") if user.blocks.active.exists?
- return -1, "You must accept the contributor terms before you can edit." if user.terms_agreed.nil?
-
- return -2, "Server error - way is only #{pointlist.length} points long." if pointlist.length < 2
-
- return -1, "One of the tags is invalid. Linux users may need to upgrade to Flash Player 10.1." unless tags_ok(attributes)
-
- attributes = strip_non_xml_chars attributes
-
- originalway = originalway.to_i
- pointlist.collect!(&:to_i)
-
- way = nil # this is returned, so scope it outside the transaction
- nodeversions = {}
- Way.transaction do
- # -- Update each changed node
-
- nodes.each do |a|
- lon = a[0].to_f
- lat = a[1].to_f
- id = a[2].to_i
- version = a[3].to_i
-
- return -2, "Server error - node with id 0 found in way #{originalway}." if id.zero?
- return -2, "Server error - node with latitude -90 found in way #{originalway}." if lat == 90
-
- id = renumberednodes[id] if renumberednodes[id]
-
- node = Node.new
- node.changeset_id = changeset_id.to_i
- node.lat = lat
- node.lon = lon
- node.tags = a[4]
-
- # fixup node tags in a way as well
- return -1, "One of the tags is invalid. Linux users may need to upgrade to Flash Player 10.1." unless tags_ok(node.tags)
-
- node.tags = strip_non_xml_chars node.tags
-
- node.tags.delete("created_by")
- node.version = version
- if id <= 0
- # We're creating the node
- node.create_with_history(user)
- renumberednodes[id] = node.id
- nodeversions[node.id] = node.version
- else
- # We're updating an existing node
- previous = Node.find(id)
- node.id = id
- previous.update_from(node, user)
- nodeversions[previous.id] = previous.version
- end
- end
-
- # -- Save revised way
-
- pointlist.collect! do |a|
- renumberednodes[a] || a
- end
- new_way = Way.new
- new_way.tags = attributes
- new_way.nds = pointlist
- new_way.changeset_id = changeset_id.to_i
- new_way.version = wayversion
- if originalway <= 0
- new_way.create_with_history(user)
- way = new_way # so we can get way.id and way.version
- else
- way = Way.find(originalway)
- if way.tags != attributes || way.nds != pointlist || !way.visible?
- new_way.id = originalway
- way.update_from(new_way, user)
- end
- end
-
- # -- Delete unwanted nodes
-
- deletednodes.each do |id, v|
- node = Node.find(id.to_i)
- new_node = Node.new
- new_node.changeset_id = changeset_id.to_i
- new_node.version = v.to_i
- new_node.id = id.to_i
- begin
- node.delete_with_history!(new_node, user)
- rescue OSM::APIPreconditionFailedError
- # We don't do anything here as the node is being used elsewhere
- # and we don't want to delete it
- end
- end
- end
-
- [0, "", originalway, way.id, renumberednodes, way.version, nodeversions, deletednodes]
- end
- end
-
- # Save POI to the database.
- # Refuses save if the node has since become part of a way.
- # Returns array with:
- # 0. 0 (success),
- # 1. success message,
- # 2. original node id (unchanged),
- # 3. new node id,
- # 4. version.
-
- def putpoi(usertoken, changeset_id, version, id, lon, lat, tags, visible)
- amf_handle_error("'putpoi' #{id}", "node", id) do
- user = getuser(usertoken)
- return -1, "You are not logged in, so the point could not be saved." unless user
- return -1, t("application.setup_user_auth.blocked") if user.blocks.active.exists?
- return -1, "You must accept the contributor terms before you can edit." if user.terms_agreed.nil?
-
- return -1, "One of the tags is invalid. Linux users may need to upgrade to Flash Player 10.1." unless tags_ok(tags)
-
- tags = strip_non_xml_chars tags
-
- id = id.to_i
- visible = (visible.to_i == 1)
- node = nil
- new_node = nil
- Node.transaction do
- if id.positive?
- begin
- node = Node.find(id)
- rescue ActiveRecord::RecordNotFound
- return [-4, "node", id]
- end
-
- return -1, "Point #{id} has since become part of a way, so you cannot save it as a POI.", id, id, version unless visible || node.ways.empty?
- end
- # We always need a new node, based on the data that has been sent to us
- new_node = Node.new
-
- new_node.changeset_id = changeset_id.to_i
- new_node.version = version
- new_node.lat = lat
- new_node.lon = lon
- new_node.tags = tags
- if id <= 0
- # We're creating the node
- new_node.create_with_history(user)
- elsif visible
- # We're updating the node
- new_node.id = id
- node.update_from(new_node, user)
- else
- # We're deleting the node
- new_node.id = id
- node.delete_with_history!(new_node, user)
- end
- end
-
- if id <= 0
- return [0, "", id, new_node.id, new_node.version]
- else
- return [0, "", id, node.id, node.version]
- end
- end
- end
-
- # Read POI from database
- # (only called on revert: POIs are usually read by whichways).
- #
- # Returns array of id, long, lat, hash of tags, (current) version.
-
- def getpoi(id, timestamp)
- amf_handle_error("'getpoi' #{id}", "node", id) do
- id = id.to_i
- n = Node.where(:id => id).first
- if n
- v = n.version
- n = OldNode.where("node_id = ? AND timestamp <= ?", id, timestamp).unredacted.order("timestamp DESC").first unless timestamp == ""
- end
-
- if n
- return [0, "", id, n.lon, n.lat, n.tags, v]
- else
- return [-4, "node", id]
- end
- end
- end
-
- # Delete way and all constituent nodes.
- # Params:
- # * The user token
- # * the changeset id
- # * the id of the way to change
- # * the version of the way that was downloaded
- # * a hash of the id and versions of all the nodes that are in the way, if any
- # of the nodes have been changed by someone else then, there is a problem!
- # Returns 0 (success), unchanged way id, new way version, new node versions.
-
- def deleteway(usertoken, changeset_id, way_id, way_version, deletednodes)
- amf_handle_error("'deleteway' #{way_id}", "way", way_id) do
- user = getuser(usertoken)
- return -1, "You are not logged in, so the way could not be deleted." unless user
- return -1, t("application.setup_user_auth.blocked") if user.blocks.active.exists?
- return -1, "You must accept the contributor terms before you can edit." if user.terms_agreed.nil?
-
- way_id = way_id.to_i
- nodeversions = {}
- old_way = nil # returned, so scope it outside the transaction
- # Need a transaction so that if one item fails to delete, the whole delete fails.
- Way.transaction do
- # -- Delete the way
-
- old_way = Way.find(way_id)
- delete_way = Way.new
- delete_way.version = way_version
- delete_way.changeset_id = changeset_id.to_i
- delete_way.id = way_id
- old_way.delete_with_history!(delete_way, user)
-
- # -- Delete unwanted nodes
-
- deletednodes.each do |id, v|
- node = Node.find(id.to_i)
- new_node = Node.new
- new_node.changeset_id = changeset_id.to_i
- new_node.version = v.to_i
- new_node.id = id.to_i
- begin
- node.delete_with_history!(new_node, user)
- nodeversions[node.id] = node.version
- rescue OSM::APIPreconditionFailedError
- # We don't do anything with the exception as the node is in use
- # elsewhere and we don't want to delete it
- end
- end
- end
- [0, "", way_id, old_way.version, nodeversions]
- end
- end
-
- # ====================================================================
- # Support functions
-
- # Authenticate token
- # (can also be of form user:pass)
- # When we are writing to the api, we need the actual user model,
- # not just the id, hence this abstraction
-
- def getuser(token)
- if token =~ /^(.+):(.+)$/
- User.authenticate(:username => Regexp.last_match(1), :password => Regexp.last_match(2))
- else
- User.authenticate(:token => token)
- end
- end
-
- def getlocales
- @getlocales ||= Locale.list(Dir.glob(Rails.root.join("config/potlatch/locales/*")).collect { |f| File.basename(f, ".yml") })
- end
-
- ##
- # check that all key-value pairs are valid UTF-8.
- def tags_ok(tags)
- tags.each do |k, v|
- return false unless UTF8.valid? k
- return false unless UTF8.valid? v
- end
- true
- end
-
- ##
- # strip characters which are invalid in XML documents from the strings
- # in the +tags+ hash.
- def strip_non_xml_chars(tags)
- new_tags = {}
- tags&.each do |k, v|
- new_k = k.delete "\000-\037\ufffe\uffff", "^\011\012\015"
- new_v = v.delete "\000-\037\ufffe\uffff", "^\011\012\015"
- new_tags[new_k] = new_v
- end
- new_tags
- end
-
- # ====================================================================
- # Alternative SQL queries for getway/whichways
-
- def sql_find_ways_in_area(bbox)
- sql = <<~SQL.squish
- SELECT DISTINCT current_ways.id AS wayid,current_ways.version AS version
- FROM current_way_nodes
- INNER JOIN current_nodes ON current_nodes.id=current_way_nodes.node_id
- INNER JOIN current_ways ON current_ways.id =current_way_nodes.id
- WHERE current_nodes.visible=TRUE
- AND current_ways.visible=TRUE
- AND #{OSM.sql_for_area(bbox, 'current_nodes.')}
- SQL
- ActiveRecord::Base.connection.select_all(sql).collect { |a| [a["wayid"].to_i, a["version"].to_i] }
- end
-
- def sql_find_pois_in_area(bbox)
- pois = []
- sql = <<~SQL.squish
- SELECT current_nodes.id,current_nodes.latitude*0.0000001 AS lat,current_nodes.longitude*0.0000001 AS lon,current_nodes.version
- FROM current_nodes
- LEFT OUTER JOIN current_way_nodes cwn ON cwn.node_id=current_nodes.id
- WHERE current_nodes.visible=TRUE
- AND cwn.id IS NULL
- AND #{OSM.sql_for_area(bbox, 'current_nodes.')}
- SQL
- ActiveRecord::Base.connection.select_all(sql).each do |row|
- poitags = {}
- ActiveRecord::Base.connection.select_all("SELECT k,v FROM current_node_tags WHERE id=#{row['id']}").each do |n|
- poitags[n["k"]] = n["v"]
- end
- pois << [row["id"].to_i, row["lon"].to_f, row["lat"].to_f, poitags, row["version"].to_i]
- end
- pois
- end
-
- def sql_find_relations_in_area_and_ways(bbox, way_ids)
- # ** It would be more Potlatchy to get relations for nodes within ways
- # during 'getway', not here
- sql = <<~SQL.squish
- SELECT DISTINCT cr.id AS relid,cr.version AS version
- FROM current_relations cr
- INNER JOIN current_relation_members crm ON crm.id=cr.id
- INNER JOIN current_nodes cn ON crm.member_id=cn.id AND crm.member_type='Node'
- WHERE #{OSM.sql_for_area(bbox, 'cn.')}
- SQL
- unless way_ids.empty?
- sql += <<~SQL.squish
- UNION
- SELECT DISTINCT cr.id AS relid,cr.version AS version
- FROM current_relations cr
- INNER JOIN current_relation_members crm ON crm.id=cr.id
- WHERE crm.member_type='Way'
- AND crm.member_id IN (#{way_ids.join(',')})
- SQL
- end
- ActiveRecord::Base.connection.select_all(sql).collect { |a| [a["relid"].to_i, a["version"].to_i] }
- end
-
- def sql_get_nodes_in_way(wayid)
- points = []
- sql = <<~SQL.squish
- SELECT latitude*0.0000001 AS lat,longitude*0.0000001 AS lon,current_nodes.id,current_nodes.version
- FROM current_way_nodes,current_nodes
- WHERE current_way_nodes.id=#{wayid.to_i}
- AND current_way_nodes.node_id=current_nodes.id
- AND current_nodes.visible=TRUE
- ORDER BY sequence_id
- SQL
- ActiveRecord::Base.connection.select_all(sql).each do |row|
- nodetags = {}
- ActiveRecord::Base.connection.select_all("SELECT k,v FROM current_node_tags WHERE id=#{row['id']}").each do |n|
- nodetags[n["k"]] = n["v"]
- end
- nodetags.delete("created_by")
- points << [row["lon"].to_f, row["lat"].to_f, row["id"].to_i, nodetags, row["version"].to_i]
- end
- points
- end
-
- def sql_get_tags_in_way(wayid)
- tags = {}
- ActiveRecord::Base.connection.select_all("SELECT k,v FROM current_way_tags WHERE id=#{wayid.to_i}").each do |row|
- tags[row["k"]] = row["v"]
- end
- tags
- end
-
- def sql_get_way_version(wayid)
- ActiveRecord::Base.connection.select_one("SELECT version FROM current_ways WHERE id=#{wayid.to_i}")["version"]
- end
-
- def sql_get_way_user(wayid)
- ActiveRecord::Base.connection.select_one("SELECT user FROM current_ways,changesets WHERE current_ways.id=#{wayid.to_i} AND current_ways.changeset=changesets.id")["user"]
- end
- end
-end
projects / rails.git / blobdiff