begin rdoc documentation
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Steve Coast
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3 changed files with 22 additions and 45 deletions
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@ -1,31 +1,26 @@
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# AMF Controller is a semi-standalone API for Flash clients, particularly Potlatch
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# All interaction between Potlatch (as a .SWF application) and the
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# OSM database takes place using this controller. Messages are
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# encoded in the Actionscript Message Format (AMF).
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#
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# Public domain.
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# editions Systeme D / Richard Fairhurst 2004-2008
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#
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# All in/out parameters are floats unless explicitly stated.
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#
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# to trap errors (getway_old,putway,putpoi,deleteway only):
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# return(-1,"message") <-- just puts up a dialogue
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# return(-2,"message") <-- also asks the user to e-mail me
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# to log:
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# RAILS_DEFAULT_LOGGER.error("Args: #{args[0]}, #{args[1]}, #{args[2]}, #{args[3]}")
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class AmfController < ApplicationController
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require 'stringio'
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session :off
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before_filter :check_write_availability
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# AMF controller for Potlatch
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# ---------------------------
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# All interaction between Potlatch (as a .SWF application) and the
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# OSM database takes place using this controller. Messages are
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# encoded in the Actionscript Message Format (AMF).
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#
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# Public domain. Set your tab width to 4 to read this document. :)
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# editions Systeme D / Richard Fairhurst 2004-2008
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#
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# All in/out parameters are floats unless explicitly stated.
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#
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# to trap errors (getway_old,putway,putpoi,deleteway only):
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# return(-1,"message") <-- just puts up a dialogue
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# return(-2,"message") <-- also asks the user to e-mail me
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# to log:
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# RAILS_DEFAULT_LOGGER.error("Args: #{args[0]}, #{args[1]}, #{args[2]}, #{args[3]}")
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# ====================================================================
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# Main AMF handler
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# ---- talk process AMF request
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# Main AMF handler. Tha talk method takes in AMF, figures out what to do and dispatched to the appropriate private method
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def talk
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req=StringIO.new(request.raw_post+0.chr) # Get POST data as request
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# (cf http://www.ruby-forum.com/topic/122163)
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@ -60,8 +55,8 @@ class AmfController < ApplicationController
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when 'getway_old'; results[index]=putdata(index,getway_old(args))
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when 'getway_history'; results[index]=putdata(index,getway_history(args))
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when 'putway'; r=putway(args,renumberednodes)
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renumberednodes=r[3]
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results[index]=putdata(index,r)
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renumberednodes=r[3]
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results[index]=putdata(index,r)
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when 'deleteway'; results[index]=putdata(index,deleteway(args))
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when 'putpoi'; results[index]=putdata(index,putpoi(args))
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when 'getpoi'; results[index]=putdata(index,getpoi(args))
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@ -94,10 +89,7 @@ class AmfController < ApplicationController
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# ====================================================================
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# Remote calls
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# ----- whichways
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# Find all the way ids and nodes (including tags and projected lat/lng) which aren't part of those ways in an are
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#
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# The argument is an array containing the following, in order:
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@ -106,7 +98,6 @@ class AmfController < ApplicationController
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# 2. maximum longitude
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# 3. maximum latitude
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# 4. baselong, 5. basey, 6. masterscale as above
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def whichways(args)
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xmin = args[0].to_f-0.01
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ymin = args[1].to_f-0.01
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@ -138,7 +129,6 @@ class AmfController < ApplicationController
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# in: as whichways
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# does: finds all deleted ways with a deleted node in bounding box
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# out: [0] array of way ids
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def whichways_deleted(args)
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xmin = args[0].to_f-0.01
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ymin = args[1].to_f-0.01
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@ -148,8 +138,6 @@ class AmfController < ApplicationController
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basey = args[5]
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masterscale = args[6]
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sql=<<-EOF
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SELECT DISTINCT current_ways.id
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FROM current_nodes,way_nodes,current_ways
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@ -164,9 +152,7 @@ class AmfController < ApplicationController
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[ways]
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end
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# ----- getway
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# Get a way with all of it's nodes and tags
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# The input is an array with the following components, in order:
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# 0. wayid - the ID of the way to get
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@ -198,7 +184,7 @@ class AmfController < ApplicationController
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projected_latitude = node.lat_potlatch(basey,masterscale)
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id = node.id
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tags_hash = node.tags_as_hash
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points << [projected_longitude, projected_latitude, id, nil, tags_hash]
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long_array << projected_longitude
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lat_array << projected_latitude
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@ -209,7 +195,6 @@ class AmfController < ApplicationController
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# ----- getway_old
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# returns old version of way
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# in: [0] way id,
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# [1] way version to get (or -1 for "last deleted version")
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# [2] baselong, [3] basey, [4] masterscale
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@ -222,7 +207,6 @@ class AmfController < ApplicationController
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# [2] array of points (as getway _except_ [3] is node.visible?, 0 or 1),
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# [4] xmin, [5] xmax, [6] ymin, [7] ymax (unprojected bbox),
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# [8] way version
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def getway_old(args)
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RAILS_DEFAULT_LOGGER.info(" Message: getway_old (server is #{SERVER_URL})")
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# if SERVER_URL=="www.openstreetmap.org" then return -1,"Revert is not currently enabled on the OpenStreetMap server." end
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@ -258,14 +242,12 @@ class AmfController < ApplicationController
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# ----- getway_history
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# find history of a way
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# in: [0] way id
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# does: finds history of a way
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# out: [0] array of previous versions (where each is
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# [0] version, [1] db timestamp (string),
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# [2] visible 0 or 1,
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# [3] username or 'anonymous' (string))
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def getway_history(args)
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wayid=args[0]
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history=[]
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@ -287,7 +269,6 @@ class AmfController < ApplicationController
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# ----- putway
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# saves a way to the database
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# in: [0] user token (string),
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# [1] original way id (may be negative),
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# [2] array of points (as getway/getway_old),
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@ -300,7 +281,6 @@ class AmfController < ApplicationController
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# out: [0] 0 (code for success), [1] original way id (unchanged),
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# [2] new way id, [3] hash of renumbered nodes (old id=>new id),
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# [4] xmin, [5] xmax, [6] ymin, [7] ymax (unprojected bbox)
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def putway(args,renumberednodes)
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RAILS_DEFAULT_LOGGER.info(" putway started")
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usertoken,originalway,points,attributes,oldversion,baselong,basey,masterscale=args
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@ -391,7 +371,6 @@ class AmfController < ApplicationController
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end
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end
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# -- 6a. delete any nodes not in modified way
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createuniquenodes(way,db_uqn,nodelist) # nodes which appear in this way but no other
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@ -453,7 +432,6 @@ class AmfController < ApplicationController
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# ----- putpoi
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# save POI to the database
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# in: [0] user token (string),
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# [1] original node id (may be negative),
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# [2] projected longitude, [3] projected latitude,
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# refuses save if the node has since become part of a way
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# out: [0] 0 (success), [1] original node id (unchanged),
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# [2] new node id
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def putpoi(args)
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usertoken,id,x,y,tags,visible,baselong,basey,masterscale=args
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uid=getuserid(usertoken)
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@ -74,6 +74,7 @@ class WayController < ApplicationController
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way = Way.find(params[:id])
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if way.visible
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# omg FIXME
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if RelationMember.find(:first, :joins => "INNER JOIN current_relations ON current_relations.id=current_relation_members.id", :conditions => [ "visible = 1 AND member_type='way' and member_id=?", params[:id]])
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render :text => "", :status => :precondition_failed
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else
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