X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/84d90fabe44a7aff9a111162cbd1e1d463ac1f9c..0ff89c31e4f8a0c3fc31772c4cf914c4fd7f5656:/app/controllers/api/amf_controller.rb diff --git a/app/controllers/api/amf_controller.rb b/app/controllers/api/amf_controller.rb deleted file mode 100644 index 34a8ff7f1..000000000 --- a/app/controllers/api/amf_controller.rb +++ /dev/null @@ -1,1001 +0,0 @@ -# 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