X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/28839fd1504004bd10f30eeba3d7212c77adfbb4..814822120a6becb634a22e872094b8fa16c3ea4f:/app/controllers/changeset_controller.rb

diff --git a/app/controllers/changeset_controller.rb b/app/controllers/changeset_controller.rb
index 5a0be3588..f7f4dc9f0 100644
--- a/app/controllers/changeset_controller.rb
+++ b/app/controllers/changeset_controller.rb
@@ -2,8 +2,8 @@
 
 class ChangesetController < ApplicationController
   require 'xml/libxml'
-  require 'diff_reader'
 
+  session :off
   before_filter :authorize, :only => [:create, :update, :delete, :upload, :include, :close]
   before_filter :check_write_availability, :only => [:create, :update, :delete, :upload, :include]
   before_filter :check_read_availability, :except => [:create, :update, :delete, :upload, :download, :query]
@@ -12,6 +12,9 @@ class ChangesetController < ApplicationController
   # Help methods for checking boundary sanity and area size
   include MapBoundary
 
+  # Helper methods for checking consistency
+  include ConsistencyValidations
+
   # Create a changeset from XML.
   def create
     if request.put?
@@ -29,6 +32,9 @@ class ChangesetController < ApplicationController
     end
   end
 
+  ##
+  # Return XML giving the basic info about the changeset. Does not 
+  # return anything about the nodes, ways and relations in the changeset.
   def read
     begin
       changeset = Changeset.find(params[:id])
@@ -47,13 +53,14 @@ class ChangesetController < ApplicationController
       return
     end
     
-    changeset = Changeset.find(params[:id])
-    
-    unless @user.id == changeset.user_id 
-      raise OSM::APIUserChangesetMismatchError 
-    end
-    
-    changeset.open = false
+    changeset = Changeset.find(params[:id])    
+    check_changeset_consistency(changeset, @user)
+
+    # to close the changeset, we'll just set its closed_at time to
+    # now. this might not be enough if there are concurrency issues, 
+    # but we'll have to wait and see.
+    changeset.set_closed_time_now
+
     changeset.save!
     render :nothing => true
   rescue ActiveRecord::RecordNotFound
@@ -67,17 +74,12 @@ class ChangesetController < ApplicationController
   # increase the size of the bounding box. this is a hint that clients can
   # set either before uploading a large number of changes, or changes that
   # the client (but not the server) knows will affect areas further away.
-  def include
+  def expand_bbox
     # only allow POST requests, because although this method is
     # idempotent, there is no "document" to PUT really...
     if request.post?
       cs = Changeset.find(params[:id])
-
-      # check user credentials - only the user who opened a changeset
-      # may alter it.
-      unless @user.id == cs.user_id 
-        raise OSM::APIUserChangesetMismatchError 
-      end
+      check_changeset_consistency(cs, @user)
 
       # keep an array of lons and lats
       lon = Array.new
@@ -139,12 +141,7 @@ class ChangesetController < ApplicationController
     end
 
     changeset = Changeset.find(params[:id])
-
-    # access control - only the user who created a changeset may
-    # upload to it.
-    unless @user.id == changeset.user_id 
-      raise OSM::APIUserChangesetMismatchError 
-    end
+    check_changeset_consistency(changeset, @user)
     
     diff_reader = DiffReader.new(request.raw_post, changeset)
     Changeset.transaction do
@@ -257,8 +254,6 @@ class ChangesetController < ApplicationController
     render :nothing => true, :status => :not_found
   rescue OSM::APIError => ex
     render ex.render_opts
-  rescue String => s
-    render :text => s, :content_type => "text/plain", :status => :bad_request
   end
   
   ##
@@ -280,6 +275,7 @@ class ChangesetController < ApplicationController
     new_changeset = Changeset.from_xml(request.raw_post)
 
     unless new_changeset.nil?
+      check_changeset_consistency(changeset, @user)
       changeset.update_from(new_changeset, @user)
       render :text => changeset.to_xml, :mime_type => "text/xml"
     else
@@ -293,6 +289,7 @@ class ChangesetController < ApplicationController
     render ex.render_opts
   end
 
+private
   #------------------------------------------------------------
   # utility functions below.
   #------------------------------------------------------------  
@@ -317,10 +314,10 @@ class ChangesetController < ApplicationController
   # area restriction.
   def conditions_bbox(bbox)
     unless bbox.nil?
-      raise "Bounding box should be min_lon,min_lat,max_lon,max_lat" unless bbox.count(',') == 3
+      raise OSM::APIBadUserInput.new("Bounding box should be min_lon,min_lat,max_lon,max_lat") unless bbox.count(',') == 3
       bbox = sanitise_boundaries(bbox.split(/,/))
-      raise "Minimum longitude should be less than maximum." unless bbox[0] <= bbox[2]
-      raise "Minimum latitude should be less than maximum." unless bbox[1] <= bbox[3]
+      raise OSM::APIBadUserInput.new("Minimum longitude should be less than maximum.") unless bbox[0] <= bbox[2]
+      raise OSM::APIBadUserInput.new("Minimum latitude should be less than maximum.") unless bbox[1] <= bbox[3]
       return ['min_lon < ? and max_lon > ? and min_lat < ? and max_lat > ?',
               bbox[2] * GeoRecord::SCALE, bbox[0] * GeoRecord::SCALE, bbox[3]* GeoRecord::SCALE, bbox[1] * GeoRecord::SCALE]
     else
@@ -332,6 +329,9 @@ class ChangesetController < ApplicationController
   # restrict changesets to those by a particular user
   def conditions_user(user)
     unless user.nil?
+      # user input checking, we don't have any UIDs < 1
+      raise OSM::APIBadUserInput.new("invalid user ID") if user.to_i < 1
+
       u = User.find(user.to_i)
       # should be able to get changesets of public users only, or 
       # our own changesets regardless of public-ness.
@@ -355,23 +355,31 @@ class ChangesetController < ApplicationController
       # if there is a range, i.e: comma separated, then the first is 
       # low, second is high - same as with bounding boxes.
       if time.count(',') == 1
-        from, to = time.split(/,/).collect { |t| DateTime.parse(t) }
-        return ['created_at > ? and created_at < ?', from, to]
+        # check that we actually have 2 elements in the array
+        times = time.split(/,/)
+        raise OSM::APIBadUserInput.new("bad time range") if times.size != 2 
+
+        from, to = times.collect { |t| DateTime.parse(t) }
+        return ['closed_at >= ? and created_at <= ?', from, to]
       else
         # if there is no comma, assume its a lower limit on time
-        return ['created_at > ?', DateTime.parse(time)]
+        return ['closed_at >= ?', DateTime.parse(time)]
       end
     else
       return nil
     end
+    # stupid DateTime seems to throw both of these for bad parsing, so
+    # we have to catch both and ensure the correct code path is taken.
   rescue ArgumentError => ex
-    raise ex.message.to_s
+    raise OSM::APIBadUserInput.new(ex.message.to_s)
+  rescue RuntimeError => ex
+    raise OSM::APIBadUserInput.new(ex.message.to_s)
   end
 
   ##
   # restrict changes to those which are open
   def conditions_open(open)
-    return open.nil? ? nil : ['open = ?', true]
+    return open.nil? ? nil : ['closed_at >= ?', DateTime.now]
   end
 
 end