X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/0a682b9da677b8e57f7960741dbff554e1a71cc1..329b6faf91745b4b6760d975d8b5574c5ffdb181:/app/controllers/amf_controller.rb

diff --git a/app/controllers/amf_controller.rb b/app/controllers/amf_controller.rb
index 7f1bae483..c175212e2 100644
--- a/app/controllers/amf_controller.rb
+++ b/app/controllers/amf_controller.rb
@@ -48,87 +48,95 @@ class AmfController < ApplicationController
   # ** FIXME: refactor to reduce duplication of code across read/write
   
   def amf_read
-    req=StringIO.new(request.raw_post+0.chr)# Get POST data as request
-                              # (cf http://www.ruby-forum.com/topic/122163)
-    req.read(2)								# Skip version indicator and client ID
-    results={}								# Results of each body
+    if request.post?
+      req=StringIO.new(request.raw_post+0.chr)# Get POST data as request
+                                # (cf http://www.ruby-forum.com/topic/122163)
+      req.read(2)								# Skip version indicator and client ID
+      results={}								# Results of each body
 
-    # Parse request
+      # Parse request
 
-	headers=AMF.getint(req)					# Read number of headers
+      headers=AMF.getint(req)				# Read number of headers
 
-    headers.times do						# Read each header
-      name=AMF.getstring(req)				#  |
-      req.getc				   				#  | skip boolean
-      value=AMF.getvalue(req)				#  |
-      header["name"]=value					#  |
-    end
+      headers.times do					# Read each header
+        name=AMF.getstring(req)				#  |
+        req.getc				   	#  | skip boolean
+        value=AMF.getvalue(req)				#  |
+        header["name"]=value				#  |
+      end
 
-    bodies=AMF.getint(req)					# Read number of bodies
-    bodies.times do							# Read each body
-      message=AMF.getstring(req)			#  | get message name
-      index=AMF.getstring(req)				#  | get index in response sequence
-      bytes=AMF.getlong(req)				#  | get total size in bytes
-      args=AMF.getvalue(req)				#  | get response (probably an array)
-      logger.info("Executing AMF #{message}:#{index}")
-
-      case message
-        when 'getpresets';			results[index]=AMF.putdata(index,getpresets())
-        when 'whichways';			results[index]=AMF.putdata(index,whichways(*args))
-        when 'whichways_deleted';	results[index]=AMF.putdata(index,whichways_deleted(*args))
-        when 'getway';				r=AMF.putdata(index,getway(args[0].to_i))
-                                    results[index]=r
-        when 'getrelation';			results[index]=AMF.putdata(index,getrelation(args[0].to_i))
-        when 'getway_old';			results[index]=AMF.putdata(index,getway_old(args[0].to_i,args[1]))
-        when 'getway_history';		results[index]=AMF.putdata(index,getway_history(args[0].to_i))
-        when 'getnode_history';		results[index]=AMF.putdata(index,getnode_history(args[0].to_i))
-        when 'findgpx';				results[index]=AMF.putdata(index,findgpx(*args))
-        when 'findrelations';		results[index]=AMF.putdata(index,findrelations(*args))
-        when 'getpoi';				results[index]=AMF.putdata(index,getpoi(*args))
+      bodies=AMF.getint(req)				# Read number of bodies
+      bodies.times do					# Read each body
+        message=AMF.getstring(req)			#  | get message name
+        index=AMF.getstring(req)			#  | get index in response sequence
+        bytes=AMF.getlong(req)				#  | get total size in bytes
+        args=AMF.getvalue(req)				#  | get response (probably an array)
+        logger.info("Executing AMF #{message}:#{index}")
+
+        case message
+          when 'getpresets';		results[index]=AMF.putdata(index,getpresets())
+          when 'whichways';		results[index]=AMF.putdata(index,whichways(*args))
+          when 'whichways_deleted';	results[index]=AMF.putdata(index,whichways_deleted(*args))
+          when 'getway';		r=AMF.putdata(index,getway(args[0].to_i))
+                                        results[index]=r
+          when 'getrelation';		results[index]=AMF.putdata(index,getrelation(args[0].to_i))
+          when 'getway_old';		results[index]=AMF.putdata(index,getway_old(args[0].to_i,args[1]))
+          when 'getway_history';	results[index]=AMF.putdata(index,getway_history(args[0].to_i))
+          when 'getnode_history';	results[index]=AMF.putdata(index,getnode_history(args[0].to_i))
+          when 'findgpx';		results[index]=AMF.putdata(index,findgpx(*args))
+          when 'findrelations';		results[index]=AMF.putdata(index,findrelations(*args))
+          when 'getpoi';		results[index]=AMF.putdata(index,getpoi(*args))
+        end
       end
+      logger.info("encoding AMF results")
+      sendresponse(results)
+    else
+      render :nothing => true, :status => :method_not_allowed
     end
-    logger.info("encoding AMF results")
-    sendresponse(results)
   end
 
   def amf_write
-    req=StringIO.new(request.raw_post+0.chr)
-    req.read(2)
-    results={}
-    renumberednodes={}						# Shared across repeated putways
-    renumberedways={}						# Shared across repeated putways
-
-    headers=AMF.getint(req)					# Read number of headers
-    headers.times do						# Read each header
-      name=AMF.getstring(req)				#  |
-      req.getc				   				#  | skip boolean
-      value=AMF.getvalue(req)				#  |
-      header["name"]=value					#  |
-    end
+    if request.post?
+      req=StringIO.new(request.raw_post+0.chr)
+      req.read(2)
+      results={}
+      renumberednodes={}				# Shared across repeated putways
+      renumberedways={}					# Shared across repeated putways
+
+      headers=AMF.getint(req)				# Read number of headers
+      headers.times do					# Read each header
+        name=AMF.getstring(req)				#  |
+        req.getc					#  | skip boolean
+        value=AMF.getvalue(req)				#  |
+        header["name"]=value				#  |
+      end
 
-    bodies=AMF.getint(req)					# Read number of bodies
-    bodies.times do							# Read each body
-      message=AMF.getstring(req)			#  | get message name
-      index=AMF.getstring(req)				#  | get index in response sequence
-      bytes=AMF.getlong(req)				#  | get total size in bytes
-      args=AMF.getvalue(req)				#  | get response (probably an array)
-
-      logger.info("Executing AMF #{message}:#{index}")
-      case message
-        when 'putway';				r=putway(renumberednodes,*args)
-									renumberednodes=r[3]
-									if r[1] != r[2] then renumberedways[r[1]] = r[2] end
-									results[index]=AMF.putdata(index,r)
-        when 'putrelation';			results[index]=AMF.putdata(index,putrelation(renumberednodes, renumberedways, *args))
-        when 'deleteway';			results[index]=AMF.putdata(index,deleteway(*args))
-        when 'putpoi';				r=putpoi(*args)
-									if r[1] != r[2] then renumberednodes[r[1]] = r[2] end
-        							results[index]=AMF.putdata(index,r)
-        when 'startchangeset';		results[index]=AMF.putdata(index,startchangeset(*args))
+      bodies=AMF.getint(req)				# Read number of bodies
+      bodies.times do					# Read each body
+        message=AMF.getstring(req)			#  | get message name
+        index=AMF.getstring(req)			#  | get index in response sequence
+        bytes=AMF.getlong(req)				#  | get total size in bytes
+        args=AMF.getvalue(req)				#  | get response (probably an array)
+
+        logger.info("Executing AMF #{message}:#{index}")
+        case message
+          when 'putway';			r=putway(renumberednodes,*args)
+						renumberednodes=r[3]
+						if r[1] != r[2] then renumberedways[r[1]] = r[2] end
+						results[index]=AMF.putdata(index,r)
+          when 'putrelation';			results[index]=AMF.putdata(index,putrelation(renumberednodes, renumberedways, *args))
+          when 'deleteway';			results[index]=AMF.putdata(index,deleteway(*args))
+          when 'putpoi';			r=putpoi(*args)
+						if r[1] != r[2] then renumberednodes[r[1]] = r[2] end
+        					results[index]=AMF.putdata(index,r)
+          when 'startchangeset';		results[index]=AMF.putdata(index,startchangeset(*args))
+        end
       end
+      logger.info("encoding AMF results")
+      sendresponse(results)
+    else
+      render :nothing => true, :status => :method_not_allowed
     end
-    logger.info("encoding AMF results")
-    sendresponse(results)
   end
 
   private
@@ -220,7 +228,7 @@ class AmfController < ApplicationController
     [0, ways, points, relations]
 
   rescue Exception => err
-    [-2,"Sorry - I can't get the map for that area."]
+    [-2,"Sorry - I can't get the map for that area. The server said: #{err}"]
   end
 
   # Find deleted ways in current bounding box (similar to whichways, but ways
@@ -236,7 +244,7 @@ class AmfController < ApplicationController
     begin
       check_boundaries(xmin, ymin, xmax, ymax)
     rescue Exception => err
-      return [-2,"Sorry - I can't get the map for that area."]
+      return [-2,"Sorry - I can't get the map for that area. The server said: #{err}"]
     end
 
     nodes_in_area = Node.find_by_area(ymin, xmin, ymax, xmax, :conditions => ["current_ways.visible = ?", false], :include => :ways_via_history)
@@ -258,7 +266,7 @@ class AmfController < ApplicationController
         # then rails only seems to return the first copy of a node when a
         # way includes a node more than once
         begin
-          way = Way.find(wayid)
+          way = Way.find(wayid, :include => { :nodes => :node_tags })
         rescue ActiveRecord::RecordNotFound
           return [wayid,[],{}]
         end
@@ -436,12 +444,12 @@ class AmfController < ApplicationController
     if searchterm.to_i>0 then
       rel = Relation.find(searchterm.to_i)
       if rel and rel.visible then
-        rels.push([rel.id, rel.tags, rel.members])
+        rels.push([rel.id, rel.tags, rel.members, rel.version])
       end
     else
       RelationTag.find(:all, :limit => 11, :conditions => ["match(v) against (?)", searchterm] ).each do |t|
       if t.relation.visible then
-	      rels.push([t.relation.id, t.relation.tags, t.relation.members])
+	      rels.push([t.relation.id, t.relation.tags, t.relation.members, t.relation.version])
 	    end
 	  end
 	end
@@ -477,8 +485,8 @@ class AmfController < ApplicationController
       members.each do |m|
         mid = m[1].to_i
         if mid < 0
-          mid = renumberednodes[mid] if m[0] == 'node'
-          mid = renumberedways[mid] if m[0] == 'way'
+          mid = renumberednodes[mid] if m[0] == 'Node'
+          mid = renumberedways[mid] if m[0] == 'Way'
         end
         if mid
           typedmembers << [m[0], mid, m[2]]
@@ -493,13 +501,13 @@ class AmfController < ApplicationController
       new_relation.version = version
 
       if relid <= 0
-        # We're creating the node
+        # We're creating the relation
         new_relation.create_with_history(user)
       elsif visible
-        # We're updating the node
+        # We're updating the relation
         relation.update_from(new_relation, user)
       else
-        # We're deleting the node
+        # We're deleting the relation
         relation.delete_with_history!(new_relation, user)
       end
     end # transaction
@@ -515,12 +523,12 @@ class AmfController < ApplicationController
     # Really need to check to see whether this is a server load issue, and the 
     # last version was in the same changeset, or belongs to the same user, then
     # we can return something different
-    return [-3, "Sorry, someone else has changed this relation since you started editing. Please click the 'Edit' tab to reload the area."]
+    return [-3, "Sorry, someone else has changed this relation since you started editing. Please click the 'Edit' tab to reload the area. The server said: #{ex}"]
   rescue OSM::APIAlreadyDeletedError => ex
     return [-1, "The relation has already been deleted."]
   rescue OSM::APIError => ex
     # Some error that we don't specifically catch
-    return [-2, "An unusual error happened (in 'putrelation' #{relid})."]
+    return [-2, "An unusual error happened (in 'putrelation' #{relid}). The server said: #{ex}"]
   end
 
   # Save a way to the database, including all nodes. Any nodes in the previous
@@ -534,7 +542,8 @@ class AmfController < ApplicationController
   # 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])
+  # 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),
@@ -544,7 +553,7 @@ class AmfController < ApplicationController
   # 4. way version,
   # 5. hash of node versions (node=>version)
 
-  def putway(renumberednodes, usertoken, changeset_id, wayversion, originalway, pointlist, attributes, nodes) #:doc:
+  def putway(renumberednodes, usertoken, changeset_id, wayversion, originalway, pointlist, attributes, nodes, deletednodes) #:doc:
 
     # -- Initialise
 	
@@ -553,22 +562,13 @@ class AmfController < ApplicationController
     if pointlist.length < 2 then return -2,"Server error - way is only #{points.length} points long." end
 
     originalway = originalway.to_i
-	pointlist.collect! {|a| a.to_i }
+  	pointlist.collect! {|a| a.to_i }
 
     way=nil	# this is returned, so scope it outside the transaction
     nodeversions = {}
     Way.transaction do
 
-      # -- Get unique nodes
-
-      if originalway <= 0
-        uniques = []
-      else
-        way = Way.find(originalway)
-        uniques = way.unshared_node_ids
-      end
-
-      #-- Update each changed node
+      # -- Update each changed node
 
       nodes.each do |a|
         lon = a[0].to_f
@@ -601,9 +601,9 @@ class AmfController < ApplicationController
 
       # -- Save revised way
 
-	  pointlist.collect! {|a|
-		renumberednodes[a] ? renumberednodes[a]:a
-	  } # renumber nodes
+	    pointlist.collect! {|a|
+		    renumberednodes[a] ? renumberednodes[a]:a
+	    } # renumber nodes
       new_way = Way.new
       new_way.tags = attributes
       new_way.nds = pointlist
@@ -612,39 +612,45 @@ class AmfController < ApplicationController
       if originalway <= 0
         new_way.create_with_history(user)
         way=new_way	# so we can get way.id and way.version
-      elsif way.tags!=attributes or way.nds!=pointlist or !way.visible?
-        way.update_from(new_way, user)
+      else
+	      way = Way.find(originalway)
+   		  if way.tags!=attributes or way.nds!=pointlist or !way.visible?
+    	    way.update_from(new_way, user)
+        end
       end
 
-      # -- Delete any unique nodes no longer used
+      # -- Delete unwanted nodes
 
-      uniques=uniques-pointlist
-      uniques.each do |n|
-        node = Node.find(n)
-        deleteitemrelations(user, changeset_id, id, 'node', node.version)
+      deletednodes.each do |id,v|
+        node = Node.find(id.to_i)
         new_node = Node.new
         new_node.changeset_id = changeset_id
-        new_node.version = node.version
-        node.delete_with_history!(new_node, user)
+        new_node.version = v.to_i
+        begin
+          node.delete_with_history!(new_node, user)
+        rescue OSM::APIPreconditionFailedError => ex
+          # We don't do anything here as the node is being used elsewhere
+          # and we don't want to delete it
+        end
       end
 
     end # transaction
 
-    [0, originalway, way.id, renumberednodes, way.version, nodeversions]
+    [0, originalway, way.id, renumberednodes, way.version, nodeversions, deletednodes]
   rescue OSM::APIChangesetAlreadyClosedError => ex
     return [-2, "Sorry, your changeset #{ex.changeset.id} has been closed (at #{ex.changeset.closed_at})."]
   rescue OSM::APIVersionMismatchError => ex
     # Really need to check to see whether this is a server load issue, and the 
     # last version was in the same changeset, or belongs to the same user, then
     # we can return something different
-    return [-3, "Sorry, someone else has changed this way since you started editing. Please click the 'Edit' tab to reload the area."]
+    return [-3, "Sorry, someone else has changed this way since you started editing. Click the 'Edit' tab to reload the area. The server said: #{ex}"]
   rescue OSM::APITooManyWayNodesError => ex
     return [-1, "You have tried to upload a really long way with #{ex.provided} points: only #{ex.max} are allowed."]
   rescue OSM::APIAlreadyDeletedError => ex
     return [-1, "The point has already been deleted."]
   rescue OSM::APIError => ex
     # Some error that we don't specifically catch
-    return [-2, "An unusual error happened (in 'putway' #{originalway})."]
+    return [-2, "An unusual error happened (in 'putway' #{originalway}). The server said: #{ex}"]
   end
 
   # Save POI to the database.
@@ -702,28 +708,28 @@ class AmfController < ApplicationController
     # Really need to check to see whether this is a server load issue, and the 
     # last version was in the same changeset, or belongs to the same user, then
     # we can return something different
-    return [-3, "Sorry, someone else has changed this point since you started editing. Please click the 'Edit' tab to reload the area."]
+    return [-3, "Sorry, someone else has changed this point since you started editing. Please click the 'Edit' tab to reload the area. The server said: #{ex}"]
   rescue OSM::APIAlreadyDeletedError => ex
     return [-1, "The point has already been deleted"]
   rescue OSM::APIError => ex
     # Some error that we don't specifically catch
-    return [-2, "An unusual error happened (in 'putpoi' #{id})."]
+    return [-2, "An unusual error happened (in 'putpoi' #{id}). The server said: #{ex}"]
   end
 
   # Read POI from database
   # (only called on revert: POIs are usually read by whichways).
   #
-  # Returns array of id, long, lat, hash of tags, version.
+  # Returns array of id, long, lat, hash of tags, (current) version.
 
   def getpoi(id,timestamp) #:doc:
-    if timestamp == '' then
-      n = Node.find(id)
-    else
+    n = Node.find(id)
+    v = n.version
+    unless timestamp == ''
       n = OldNode.find(id, :conditions=>['timestamp=?',DateTime.strptime(timestamp, "%d %b %Y, %H:%M:%S")])
     end
 
     if n
-      return [n.id, n.lon, n.lat, n.tags, n.version]
+      return [n.id, n.lon, n.lat, n.tags, v]
     else
       return [nil, nil, nil, {}, nil]
     end
@@ -739,7 +745,7 @@ class AmfController < ApplicationController
   # of the nodes have been changed by someone else then, there is a problem!
   # Returns 0 (success), unchanged way id.
 
-  def deleteway(usertoken, changeset_id, way_id, way_version, node_id_version) #:doc:
+  def deleteway(usertoken, changeset_id, way_id, way_version, deletednodes) #:doc:
     user = getuser(usertoken)
     unless user then return -1,"You are not logged in, so the way could not be deleted." end
       
@@ -747,28 +753,29 @@ class AmfController < ApplicationController
     # Need a transaction so that if one item fails to delete, the whole delete fails.
     Way.transaction do
 
-      # delete the way
+      # -- Delete the way
+
       old_way = Way.find(way_id)
       delete_way = Way.new
       delete_way.version = way_version
       delete_way.changeset_id = changeset_id
       old_way.delete_with_history!(delete_way, user)
 
-      old_way.unshared_node_ids.each do |node_id|
-        # delete the node
-        node = Node.find(node_id)
-        delete_node = Node.new
-        delete_node.changeset_id = changeset_id
-        if node_id_version[node_id.to_s]
-          delete_node.version = node_id_version[node_id.to_s]
-        else
-          # in case the node wasn't passed (i.e. if it was previously removed
-          # from the way in Potlatch)
-          deleteitemrelations(user, changeset_id, node_id, 'node', node.version)
-	      delete_node.version = node.version
-	    end
-        node.delete_with_history!(delete_node, 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
+        new_node.version = v.to_i
+        begin
+          node.delete_with_history!(new_node, user)
+        rescue OSM::APIPreconditionFailedError => ex
+          # 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 # transaction
     [0, way_id]
   rescue OSM::APIChangesetAlreadyClosedError => ex
@@ -782,35 +789,13 @@ class AmfController < ApplicationController
     return [-1, "The way has already been deleted."]
   rescue OSM::APIError => ex
     # Some error that we don't specifically catch
-    return [-2, "An unusual error happened (in 'deleteway' #{way_id})."]
+    return [-2, "An unusual error happened (in 'deleteway' #{way_id}). The server said: #{ex}"]
   end
 
 
   # ====================================================================
   # Support functions
 
-  # Remove a node or way from all relations
-  # This is only used by putway and deleteway when deleting nodes removed 
-  # from a way (because Potlatch itself doesn't keep track of these - 
-  # possible FIXME).
-
-  def deleteitemrelations(user, changeset_id, objid, type, version) #:doc:
-    relations = RelationMember.find(:all, 
-									:conditions => ['member_type = ? and member_id = ?', type.classify, objid], 
-									:include => :relation).collect { |rm| rm.relation }.uniq
-
-    relations.each do |rel|
-      rel.members.delete_if { |x| x[0] == type and x[1] == objid }
-      new_rel = Relation.new
-      new_rel.tags = rel.tags
-      new_rel.visible = rel.visible
-      new_rel.version = rel.version
-      new_rel.members = rel.members
-      new_rel.changeset_id = changeset_id
-      rel.update_from(new_rel, user)
-    end
-  end
-
   # Authenticate token
   # (can also be of form user:pass)
   # When we are writing to the api, we need the actual user model, 
@@ -903,7 +888,7 @@ class AmfController < ApplicationController
   def sql_get_nodes_in_way(wayid)
     points=[]
     sql=<<-EOF
-      SELECT latitude*0.0000001 AS lat,longitude*0.0000001 AS lon,current_nodes.id 
+      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 
@@ -916,7 +901,7 @@ class AmfController < ApplicationController
         nodetags[n['k']]=n['v']
       end
       nodetags.delete('created_by')
-      points << [row['lon'].to_f,row['lat'].to_f,row['id'].to_i,nodetags]
+      points << [row['lon'].to_f,row['lat'].to_f,row['id'].to_i,nodetags,row['version'].to_i]
     end
     points
   end