X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/dc2a2c8ebd1a11e4a64555fda22c6859a51defff..1e30edba53f179fb06a1233b245252d1d5a8ead1:/app/controllers/amf_controller.rb

diff --git a/app/controllers/amf_controller.rb b/app/controllers/amf_controller.rb
index 6860056e7..4f6adae5d 100644
--- a/app/controllers/amf_controller.rb
+++ b/app/controllers/amf_controller.rb
@@ -38,15 +38,15 @@
 class AmfController < ApplicationController
   include Potlatch
 
-  skip_before_filter :verify_authenticity_token
-  before_filter :check_api_writable
+  skip_before_action :verify_authenticity_token
+  before_action :check_api_writable
 
   # 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.content_type = Mime[:amf]
     self.response_body = Dispatcher.new(request.raw_post) do |message, *args|
       logger.info("Executing AMF #{message}(#{args.join(',')})")
 
@@ -74,7 +74,7 @@ class AmfController < ApplicationController
     err = false                       # Abort batch on error
 
     self.status = :ok
-    self.content_type = Mime::AMF
+    self.content_type = Mime[:amf]
     self.response_body = Dispatcher.new(request.raw_post) do |message, *args|
       logger.info("Executing AMF #{message}")
 
@@ -86,19 +86,19 @@ class AmfController < ApplicationController
           orn = renumberednodes.dup
           result = putway(renumberednodes, *args)
           result[4] = renumberednodes.reject { |k, _v| orn.key?(k) }
-          if result[0] == 0 && result[2] != result[3] then renumberedways[result[2]] = result[3] end
+          renumberedways[result[2]] = result[3] if result[0].zero? && result[2] != result[3]
         when "putrelation" then
           result = putrelation(renumberednodes, renumberedways, *args)
         when "deleteway" then
           result = deleteway(*args)
         when "putpoi" then
           result = putpoi(*args)
-          if result[0] == 0 && result[2] != result[3] then renumberednodes[result[2]] = result[3] end
+          renumberednodes[result[2]] = result[3] if result[0].zero? && result[2] != result[3]
         when "startchangeset" then
           result = startchangeset(*args)
         end
 
-        err = true if result[0] == -3  # If a conflict is detected, don't execute any more writes
+        err = true if result[0] == -3 # If a conflict is detected, don't execute any more writes
       end
 
       result
@@ -110,17 +110,17 @@ class AmfController < ApplicationController
   def amf_handle_error(call, rootobj, rootid)
     yield
   rescue OSM::APIAlreadyDeletedError => ex
-    return [-4, ex.object, ex.object_id]
+    [-4, ex.object, ex.object_id]
   rescue OSM::APIVersionMismatchError => ex
-    return [-3, [rootobj, rootid], [ex.type.downcase, ex.id, ex.latest]]
+    [-3, [rootobj, rootid], [ex.type.downcase, ex.id, ex.latest]]
   rescue OSM::APIUserChangesetMismatchError => ex
-    return [-2, ex.to_s]
+    [-2, ex.to_s]
   rescue OSM::APIBadBoundingBox => ex
-    return [-2, "Sorry - I can't get the map for that area. The server said: #{ex}"]
+    [-2, "Sorry - I can't get the map for that area. The server said: #{ex}"]
   rescue OSM::APIError => ex
-    return [-1, ex.to_s]
+    [-1, ex.to_s]
   rescue StandardError => ex
-    return [-2, "An unusual error happened (in #{call}). The server said: #{ex}"]
+    [-2, "An unusual error happened (in #{call}). The server said: #{ex}"]
   end
 
   def amf_handle_error_with_timeout(call, rootobj, rootid)
@@ -137,12 +137,13 @@ class AmfController < ApplicationController
   def startchangeset(usertoken, cstags, closeid, closecomment, opennew)
     amf_handle_error("'startchangeset'", nil, nil) do
       user = getuser(usertoken)
-      unless user then return -1, "You are not logged in, so Potlatch can't write any changes to the database." end
-      if user.blocks.active.exists? then return -1, t("application.setup_user_auth.blocked") end
-      if REQUIRE_TERMS_AGREED && user.terms_agreed.nil? then return -1, "You must accept the contributor terms before you can edit." end
+      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 REQUIRE_TERMS_AGREED && user.terms_agreed.nil?
 
       if cstags
-        unless tags_ok(cstags) then return -1, "One of the tags is invalid. Linux users may need to upgrade to Flash Player 10.1." end
+        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
 
@@ -151,7 +152,7 @@ class AmfController < ApplicationController
         cs = Changeset.find(closeid.to_i)
         cs.set_closed_time_now
         if cs.user_id != user.id
-          fail OSM::APIUserChangesetMismatchError.new
+          raise OSM::APIUserChangesetMismatchError
         elsif closecomment.empty?
           cs.save!
         else
@@ -163,7 +164,7 @@ class AmfController < ApplicationController
       end
 
       # open a new changeset
-      if opennew != 0
+      if opennew.nonzero?
         cs = Changeset.new
         cs.tags = cstags
         cs.user_id = user.id
@@ -186,15 +187,17 @@ class AmfController < ApplicationController
   # Return presets (default tags, localisation etc.):
   # uses POTLATCH_PRESETS global, set up in OSM::Potlatch.
 
-  def getpresets(usertoken, lang) #:doc:
+  def getpresets(usertoken, _lang)
     user = getuser(usertoken)
 
-    if user && !user.languages.empty?
-      http_accept_language.user_preferred_languages = user.languages
-    end
+    langs = if user && !user.languages.empty?
+              Locale.list(user.languages)
+            else
+              Locale.list(http_accept_language.user_preferred_languages)
+            end
 
-    lang = http_accept_language.compatible_language_from(getlocales)
-    (real_lang, localised) = getlocalized(lang)
+    lang = getlocales.preferred(langs)
+    (real_lang, localised) = getlocalized(lang.to_s)
 
     # Tell Potlatch what language it's using
     localised["__potlatch_locale"] = real_lang
@@ -218,16 +221,16 @@ class AmfController < ApplicationController
     loaded_lang = "en"
 
     # Load English defaults
-    en = YAML.load(File.open("#{Rails.root}/config/potlatch/locales/en.yml"))["en"]
+    en = YAML.safe_load(File.open(Rails.root.join("config", "potlatch", "locales", "en.yml")))["en"]
 
     if lang == "en"
       return [loaded_lang, en]
     else
       # Use English as a fallback
       begin
-        other = YAML.load(File.open("#{Rails.root}/config/potlatch/locales/#{lang}.yml"))[lang]
+        other = YAML.safe_load(File.open(Rails.root.join("config", "potlatch", "locales", "#{lang}.yml")))[lang]
         loaded_lang = lang
-      rescue
+      rescue StandardError
         other = en
       end
 
@@ -251,7 +254,7 @@ class AmfController < ApplicationController
   # 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) #:doc:
+  def whichways(xmin, ymin, xmax, ymax)
     amf_handle_error_with_timeout("'whichways'", nil, nil) do
       enlarge = [(xmax - xmin) / 8, 0.01].min
       xmin -= enlarge
@@ -295,7 +298,7 @@ class AmfController < ApplicationController
   # 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) #:doc:
+  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
@@ -319,7 +322,7 @@ class AmfController < ApplicationController
   # 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) #:doc:
+  def getway(wayid)
     amf_handle_error_with_timeout("'getway' #{wayid}", "way", wayid) do
       if POTLATCH_USE_SQL
         points = sql_get_nodes_in_way(wayid)
@@ -364,7 +367,7 @@ class AmfController < ApplicationController
   # 4. version,
   # 5. is this the current, visible version? (boolean)
 
-  def getway_old(id, timestamp) #:doc:
+  def getway_old(id, timestamp)
     amf_handle_error_with_timeout("'getway_old' #{id}, #{timestamp}", "way", id) do
       if timestamp == ""
         # undelete
@@ -373,11 +376,12 @@ class AmfController < ApplicationController
       else
         begin
           # revert
-          timestamp = DateTime.strptime(timestamp.to_s, "%d %b %Y, %H:%M:%S")
+          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?
-            points = old_way.get_nodes_revert(timestamp)
-            unless old_way.visible
+            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
@@ -408,16 +412,16 @@ class AmfController < ApplicationController
   # sort and collapse list (to within 2 seconds); trim all dates before the
   # start date of the way.
 
-  def getway_history(wayid) #:doc:
+  def getway_history(wayid)
     revdates = []
     revusers = {}
     Way.find(wayid).old_ways.unredacted.collect do |a|
       revdates.push(a.timestamp)
-      unless revusers.key?(a.timestamp.to_i) then revusers[a.timestamp.to_i] = change_user(a) end
+      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)
-          unless revusers.key?(o.timestamp.to_i) then revusers[o.timestamp.to_i] = change_user(o) end
+          revusers[o.timestamp.to_i] = change_user(o) unless revusers.key?(o.timestamp.to_i)
         end
       end
     end
@@ -434,20 +438,20 @@ class AmfController < ApplicationController
     revdates.collect! { |d| [(d + 1).strftime("%d %b %Y, %H:%M:%S")] + revusers[d.to_i] }
     revdates.uniq!
 
-    return ["way", wayid, revdates]
+    ["way", wayid, revdates]
   rescue ActiveRecord::RecordNotFound
-    return ["way", wayid, []]
+    ["way", wayid, []]
   end
 
   # Find history of a node. Returns 'node', id, and an array of previous versions as above.
 
-  def getnode_history(nodeid) #:doc:
+  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
-    return ["node", nodeid, history]
+    ["node", nodeid, history]
   rescue ActiveRecord::RecordNotFound
-    return ["node", nodeid, []]
+    ["node", nodeid, []]
   end
 
   def change_user(obj)
@@ -468,11 +472,11 @@ class AmfController < ApplicationController
       return -1, t("application.setup_user_auth.blocked") if user.blocks.active.exists?
 
       query = Trace.visible_to(user)
-      if searchterm.to_i > 0
-        query = query.where(:id => searchterm.to_i)
-      else
-        query = query.where("MATCH(name) AGAINST (?)", searchterm).limit(21)
-      end
+      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
@@ -489,11 +493,12 @@ class AmfController < ApplicationController
   # 4. list of members,
   # 5. version.
 
-  def getrelation(relid) #:doc:
+  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
@@ -503,16 +508,12 @@ class AmfController < ApplicationController
 
   def findrelations(searchterm)
     rels = []
-    if searchterm.to_i > 0
+    if searchterm.to_i.positive?
       rel = Relation.where(:id => searchterm.to_i).first
-      if rel && rel.visible
-        rels.push([rel.id, rel.tags, rel.members, rel.version])
-      end
+      rels.push([rel.id, rel.tags, rel.members, rel.version]) if rel&.visible
     else
       RelationTag.where("v like ?", "%#{searchterm}%").limit(11).each do |t|
-        if t.relation.visible
-          rels.push([t.relation.id, t.relation.tags, t.relation.members, t.relation.version])
-        end
+        rels.push([t.relation.id, t.relation.tags, t.relation.members, t.relation.version]) if t.relation.visible
       end
     end
     rels
@@ -525,24 +526,26 @@ class AmfController < ApplicationController
   # 2. new relation id,
   # 3. version.
 
-  def putrelation(renumberednodes, renumberedways, usertoken, changeset_id, version, relid, tags, members, visible) #:doc:
-    amf_handle_error("'putrelation' #{relid}", "relation", relid)  do
+  def putrelation(renumberednodes, renumberedways, usertoken, changeset_id, version, relid, tags, members, visible)
+    amf_handle_error("'putrelation' #{relid}", "relation", relid) do
       user = getuser(usertoken)
-      unless user then return -1, "You are not logged in, so the relation could not be saved." end
-      if user.blocks.active.exists? then return -1, t("application.setup_user_auth.blocked") end
-      if REQUIRE_TERMS_AGREED && user.terms_agreed.nil? then return -1, "You must accept the contributor terms before you can edit." end
 
-      unless tags_ok(tags) then return -1, "One of the tags is invalid. Linux users may need to upgrade to Flash Player 10.1." end
+      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 REQUIRE_TERMS_AGREED && 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 != 0)
+      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 > 0
+        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
 
@@ -550,13 +553,11 @@ class AmfController < ApplicationController
         typedmembers = []
         members.each do |m|
           mid = m[1].to_i
-          if mid < 0
+          if mid.negative?
             mid = renumberednodes[mid] if m[0] == "Node"
             mid = renumberedways[mid] if m[0] == "Way"
           end
-          if mid
-            typedmembers << [m[0], mid, m[2].delete("\000-\037\ufffe\uffff", "^\011\012\015")]
-          end
+          typedmembers << [m[0], mid, m[2].delete("\000-\037\ufffe\uffff", "^\011\012\015")] if mid
         end
 
         # assign new contents
@@ -578,7 +579,7 @@ class AmfController < ApplicationController
           new_relation.id = relid
           relation.delete_with_history!(new_relation, user)
         end
-      end # transaction
+      end
 
       if relid <= 0
         return [0, "", relid, new_relation.id, new_relation.version]
@@ -609,20 +610,22 @@ class AmfController < ApplicationController
   # 3. new way id,
   # 4. hash of renumbered nodes (old id=>new id),
   # 5. way version,
-  # 6. hash of node versions (node=>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) #:doc:
+  def putway(renumberednodes, usertoken, changeset_id, wayversion, originalway, pointlist, attributes, nodes, deletednodes)
     amf_handle_error("'putway' #{originalway}", "way", originalway) do
       # -- Initialise
 
       user = getuser(usertoken)
-      unless user then return -1, "You are not logged in, so the way could not be saved." end
-      if user.blocks.active.exists? then return -1, t("application.setup_user_auth.blocked") end
-      if REQUIRE_TERMS_AGREED && user.terms_agreed.nil? then return -1, "You must accept the contributor terms before you can edit." end
+      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 REQUIRE_TERMS_AGREED && user.terms_agreed.nil?
 
-      if pointlist.length < 2 then return -2, "Server error - way is only #{points.length} points long." end
+      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)
 
-      unless tags_ok(attributes) then return -1, "One of the tags is invalid. Linux users may need to upgrade to Flash Player 10.1." end
       attributes = strip_non_xml_chars attributes
 
       originalway = originalway.to_i
@@ -639,10 +642,10 @@ class AmfController < ApplicationController
           id = a[2].to_i
           version = a[3].to_i
 
-          if id == 0  then return -2, "Server error - node with id 0 found in way #{originalway}." end
-          if lat == 90 then return -2, "Server error - node with latitude -90 found in way #{originalway}." end
+          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]
+          id = renumberednodes[id] if renumberednodes[id]
 
           node = Node.new
           node.changeset_id = changeset_id
@@ -651,7 +654,8 @@ class AmfController < ApplicationController
           node.tags = a[4]
 
           # fixup node tags in a way as well
-          unless tags_ok(node.tags) then return -1, "One of the tags is invalid. Linux users may need to upgrade to Flash Player 10.1." end
+          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")
@@ -672,9 +676,9 @@ class AmfController < ApplicationController
 
         # -- Save revised way
 
-        pointlist.collect! do|a|
-          renumberednodes[a] ? renumberednodes[a] : a
-        end # renumber nodes
+        pointlist.collect! do |a|
+          renumberednodes[a] || a
+        end
         new_way = Way.new
         new_way.tags = attributes
         new_way.nds = pointlist
@@ -706,7 +710,7 @@ class AmfController < ApplicationController
             # and we don't want to delete it
           end
         end
-      end # transaction
+      end
 
       [0, "", originalway, way.id, renumberednodes, way.version, nodeversions, deletednodes]
     end
@@ -721,14 +725,15 @@ class AmfController < ApplicationController
   # 3. new node id,
   # 4. version.
 
-  def putpoi(usertoken, changeset_id, version, id, lon, lat, tags, visible) #:doc:
+  def putpoi(usertoken, changeset_id, version, id, lon, lat, tags, visible)
     amf_handle_error("'putpoi' #{id}", "node", id) do
       user = getuser(usertoken)
-      unless user then return -1, "You are not logged in, so the point could not be saved." end
-      if user.blocks.active.exists? then return -1, t("application.setup_user_auth.blocked") end
-      if REQUIRE_TERMS_AGREED && user.terms_agreed.nil? then return -1, "You must accept the contributor terms before you can edit." end
+      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 REQUIRE_TERMS_AGREED && 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)
 
-      unless tags_ok(tags) then return -1, "One of the tags is invalid. Linux users may need to upgrade to Flash Player 10.1." end
       tags = strip_non_xml_chars tags
 
       id = id.to_i
@@ -736,12 +741,14 @@ class AmfController < ApplicationController
       node = nil
       new_node = nil
       Node.transaction do
-        if id > 0
-          node = Node.find(id)
-
-          unless visible
-            unless node.ways.empty? then return -1, "Point #{id} has since become part of a way, so you cannot save it as a POI.", id, id, version end
+        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
@@ -763,7 +770,7 @@ class AmfController < ApplicationController
           new_node.id = id
           node.delete_with_history!(new_node, user)
         end
-      end # transaction
+      end
 
       if id <= 0
         return [0, "", id, new_node.id, new_node.version]
@@ -778,17 +785,17 @@ class AmfController < ApplicationController
   #
   # Returns array of id, long, lat, hash of tags, (current) version.
 
-  def getpoi(id, timestamp) #:doc:
+  def getpoi(id, timestamp)
     amf_handle_error("'getpoi' #{id}", "node", id) do
       id = id.to_i
-      n = Node.find(id)
-      v = n.version
-      unless timestamp == ""
-        n = OldNode.where("node_id = ? AND timestamp <= ?", id, timestamp).unredacted.order("timestamp DESC").first
+      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, "", n.id, n.lon, n.lat, n.tags, v]
+        return [0, "", id, n.lon, n.lat, n.tags, v]
       else
         return [-4, "node", id]
       end
@@ -805,12 +812,12 @@ class AmfController < ApplicationController
   # 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) #:doc:
+  def deleteway(usertoken, changeset_id, way_id, way_version, deletednodes)
     amf_handle_error("'deleteway' #{way_id}", "way", way_id) do
       user = getuser(usertoken)
-      unless user then return -1, "You are not logged in, so the way could not be deleted." end
-      if user.blocks.active.exists? then return -1, t("application.setup_user_auth.blocked") end
-      if REQUIRE_TERMS_AGREED && user.terms_agreed.nil? then return -1, "You must accept the contributor terms before you can edit." end
+      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 REQUIRE_TERMS_AGREED && user.terms_agreed.nil?
 
       way_id = way_id.to_i
       nodeversions = {}
@@ -842,7 +849,7 @@ class AmfController < ApplicationController
             # elsewhere and we don't want to delete it
           end
         end
-      end # transaction
+      end
       [0, "", way_id, old_way.version, nodeversions]
     end
   end
@@ -855,17 +862,16 @@ class AmfController < ApplicationController
   # When we are writing to the api, we need the actual user model,
   # not just the id, hence this abstraction
 
-  def getuser(token) #:doc:
+  def getuser(token)
     if token =~ /^(.+)\:(.+)$/
-      user = User.authenticate(:username => $1, :password => $2)
+      User.authenticate(:username => Regexp.last_match(1), :password => Regexp.last_match(2))
     else
-      user = User.authenticate(:token => token)
+      User.authenticate(:token => token)
     end
-    user
   end
 
   def getlocales
-    Dir.glob("#{Rails.root}/config/potlatch/locales/*").collect { |f| File.basename(f, ".yml") }
+    @getlocales ||= Locale.list(Dir.glob(Rails.root.join("config", "potlatch", "locales", "*")).collect { |f| File.basename(f, ".yml") })
   end
 
   ##
@@ -883,12 +889,10 @@ class AmfController < ApplicationController
   # in the +tags+ hash.
   def strip_non_xml_chars(tags)
     new_tags = {}
-    unless tags.nil?
-      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
+    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
@@ -897,28 +901,28 @@ class AmfController < ApplicationController
   # Alternative SQL queries for getway/whichways
 
   def sql_find_ways_in_area(bbox)
-    sql = <<-EOF
+    sql = <<-SQL
     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.")}
-    EOF
+       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 = <<-EOF
+    sql = <<-SQL
       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.")}
-    EOF
+       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|
@@ -932,36 +936,36 @@ class AmfController < ApplicationController
   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 = <<-EOF
+    sql = <<-SQL
       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.")}
-      EOF
+       WHERE #{OSM.sql_for_area(bbox, 'cn.')}
+    SQL
     unless way_ids.empty?
-      sql += <<-EOF
+      sql += <<-SQL
        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(',')})
-        EOF
+      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 = <<-EOF
+    sql = <<-SQL
       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
-    EOF
+    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|