970 lines
33 KiB
Ruby
970 lines
33 KiB
Ruby
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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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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req.read(2) # Skip version indicator and client ID
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results={} # Results of each body
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renumberednodes={} # Shared across repeated putways
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# -------------
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# Parse request
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headers=getint(req) # Read number of headers
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headers.times do # Read each header
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name=getstring(req) # |
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req.getc # | skip boolean
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value=getvalue(req) # |
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header["name"]=value # |
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end
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bodies=getint(req) # Read number of bodies
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bodies.times do # Read each body
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message=getstring(req) # | get message name
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index=getstring(req) # | get index in response sequence
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bytes=getlong(req) # | get total size in bytes
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args=getvalue(req) # | get response (probably an array)
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case message
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when 'getpresets'; results[index]=putdata(index,getpresets)
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when 'whichways'; results[index]=putdata(index,whichways(args))
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when 'whichways_deleted'; results[index]=putdata(index,whichways_deleted(args))
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when 'getway'; results[index]=putdata(index,getway(args))
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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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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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end
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end
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# ------------------
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# Write out response
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RAILS_DEFAULT_LOGGER.info(" Response: start")
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a,b=results.length.divmod(256)
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render :content_type => "application/x-amf", :text => proc { |response, output|
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output.write 0.chr+0.chr+0.chr+0.chr+a.chr+b.chr
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results.each do |k,v|
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output.write(v)
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end
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}
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RAILS_DEFAULT_LOGGER.info(" Response: end")
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end
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private
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# ====================================================================
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# Remote calls
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# ----- getpresets
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# in: none
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# does: reads tag preset menus, colours, and autocomplete config files
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# out: [0] presets, [1] presetmenus, [2] presetnames,
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# [3] colours, [4] casing, [5] areas, [6] autotags
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# (all hashes)
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def getpresets
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RAILS_DEFAULT_LOGGER.info(" Message: getpresets")
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# Read preset menus
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presets={}
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presetmenus={}; presetmenus['point']=[]; presetmenus['way']=[]; presetmenus['POI']=[]
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presetnames={}; presetnames['point']={}; presetnames['way']={}; presetnames['POI']={}
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presettype=''
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presetcategory=''
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# StringIO.open(txt) do |file|
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File.open("#{RAILS_ROOT}/config/potlatch/presets.txt") do |file|
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file.each_line {|line|
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t=line.chomp
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if (t=~/(\w+)\/(\w+)/) then
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presettype=$1
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presetcategory=$2
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presetmenus[presettype].push(presetcategory)
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presetnames[presettype][presetcategory]=["(no preset)"]
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elsif (t=~/^(.+):\s?(.+)$/) then
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pre=$1; kv=$2
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presetnames[presettype][presetcategory].push(pre)
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presets[pre]={}
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kv.split(',').each {|a|
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if (a=~/^(.+)=(.*)$/) then presets[pre][$1]=$2 end
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}
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end
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}
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end
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# Read colours/styling
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colours={}; casing={}; areas={}
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File.open("#{RAILS_ROOT}/config/potlatch/colours.txt") do |file|
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file.each_line {|line|
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t=line.chomp
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if (t=~/(\w+)\s+([^\s]+)\s+([^\s]+)\s+([^\s]+)/) then
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tag=$1
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if ($2!='-') then colours[tag]=$2.hex end
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if ($3!='-') then casing[tag]=$3.hex end
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if ($4!='-') then areas[tag]=$4.hex end
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end
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}
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end
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# Read auto-complete
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autotags={}; autotags['point']={}; autotags['way']={}; autotags['POI']={};
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File.open("#{RAILS_ROOT}/config/potlatch/autocomplete.txt") do |file|
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file.each_line {|line|
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t=line.chomp
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if (t=~/^(\w+)\/(\w+)\s+(.+)$/) then
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tag=$1; type=$2; values=$3
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if values=='-' then autotags[type][tag]=[]
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else autotags[type][tag]=values.split(',').sort.reverse end
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end
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}
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end
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[presets,presetmenus,presetnames,colours,casing,areas,autotags]
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end
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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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# 0. minimum longitude
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# 1. minimum latitude
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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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xmax = args[2].to_f+0.01
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ymax = args[3].to_f+0.01
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baselong = args[4]
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basey = args[5]
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masterscale = args[6]
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RAILS_DEFAULT_LOGGER.info(" Message: whichways, bbox=#{xmin},#{ymin},#{xmax},#{ymax}")
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# find the way ids in an area
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nodes_in_area = Node.find_by_area(ymin, xmin, ymax, xmax,:conditions => "visible = 1", :include => :way_nodes)
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waynodes_in_area = nodes_in_area.collect {|node| node.way_nodes }.flatten
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ways = waynodes_in_area.collect {|way_node| way_node.id[0]}.uniq
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# find the node ids in an area that aren't part of ways
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node_ids_in_area = nodes_in_area.collect {|node| node.id}.uniq
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node_ids_used_in_ways = waynodes_in_area.collect {|way_node| way_node.node_id}.uniq
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node_ids_not_used_in_area = node_ids_in_area - node_ids_used_in_ways
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nodes_not_used_in_area = Node.find(node_ids_not_used_in_area)
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points = nodes_not_used_in_area.collect {|n| [n.id, n.lon_potlatch(baselong,masterscale), n.lat_potlatch(basey,masterscale), n.tags_as_hash] }
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[ways,points]
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end
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# ----- whichways_deleted
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# return array of deleted ways in current bounding box
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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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xmax = args[2].to_f+0.01
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ymax = args[3].to_f+0.01
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baselong = args[4]
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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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WHERE #{OSM.sql_for_area(ymin, xmin, ymax, xmax, "current_nodes.")}
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AND way_nodes.node_id=current_nodes.id
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AND way_nodes.id=current_ways.id
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AND current_nodes.visible=0
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AND current_ways.visible=0
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EOF
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waylist = ActiveRecord::Base.connection.select_all(sql)
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ways = waylist.collect {|a| a['id'].to_i }
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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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# 1. baselong - origin of SWF map (longitude)
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# 2. basey - origin of SWF map (latitude)
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# 3. masterscale - SWF map scale
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#
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# The output is an array which contains all the nodes (with projected
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# latitude and longitude) and tags for a way (and all the nodes tags).
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# It also has the way's unprojected (WGS84) bbox.
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#
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# FIXME: The server really shouldn't be figuring out a ways bounding box and doing projection for potlatch
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# FIXME: the argument splitting should be done in the 'talk' method, not here
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def getway(args)
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wayid,baselong,basey,masterscale = args
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wayid = wayid.to_i
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RAILS_DEFAULT_LOGGER.info(" Message: getway, id=#{wayid}")
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way = Way.find_eager(wayid)
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long_array = []
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lat_array = []
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points = []
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way.way_nodes.each do |way_node|
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node = way_node.node # get the node record
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projected_longitude = node.lon_potlatch(baselong,masterscale) # do projection for potlatch
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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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end
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[wayid,points,way.tags,long_array.min,long_array.max,lat_array.min,lat_array.max]
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end
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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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# does: gets old version of way and all constituent nodes
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# for undelete, always uses the most recent version of each node
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# (even if it's moved)
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# for revert, uses the historic version of each node, but if that node is
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# still visible and has been changed since, generates a new node id
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# out: [0] 0 (code for success), [1] SWF object name,
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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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wayid,version,baselong,basey,masterscale=args
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wayid = wayid.to_i
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version = version.to_i
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xmin = ymin = 999999
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xmax = ymax = -999999
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points=[]
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if version<0
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historic=false
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version=getlastversion(wayid,version)
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else
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historic=true
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end
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readwayquery_old(wayid,version,historic).each { |row|
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points<<[long2coord(row['longitude'].to_f,baselong,masterscale),lat2coord(row['latitude'].to_f,basey,masterscale),row['id'].to_i,row['visible'].to_i,tag2array(row['tags'].to_s)]
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xmin=[xmin,row['longitude'].to_f].min
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xmax=[xmax,row['longitude'].to_f].max
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ymin=[ymin,row['latitude' ].to_f].min
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ymax=[ymax,row['latitude' ].to_f].max
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}
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# get tags from this version
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attributes={}
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attrlist=ActiveRecord::Base.connection.select_all "SELECT k,v FROM way_tags WHERE id=#{wayid} AND version=#{version}"
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attrlist.each {|a| attributes[a['k'].gsub(':','|')]=a['v'] }
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attributes['history']="Retrieved from v"+version.to_s
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[0,wayid,points,attributes,xmin,xmax,ymin,ymax,version]
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end
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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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sql=<<-EOF
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SELECT version,timestamp,visible,display_name,data_public
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FROM ways,users
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WHERE ways.id=#{wayid}
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AND ways.user_id=users.id
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AND ways.visible=1
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ORDER BY version DESC
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EOF
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histlist=ActiveRecord::Base.connection.select_all(sql)
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histlist.each { |row|
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if row['data_public'].to_i==1 then user=row['display_name'] else user='anonymous' end
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history<<[row['version'],row['timestamp'],row['visible'],user]
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}
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[history]
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end
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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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# [3] hash of way tags,
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# [4] original way version (0 if not a reverted/undeleted way),
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# [5] baselong, [6] basey, [7] masterscale
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# does: saves way to the database
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# all constituent nodes are created/updated as necessary
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# (or deleted if they were in the old version and are otherwise unused)
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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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uid=getuserid(usertoken)
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if !uid then return -1,"You are not logged in, so the way could not be saved." end
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RAILS_DEFAULT_LOGGER.info(" putway authenticated happily")
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db_uqn='unin'+(rand*100).to_i.to_s+uid.to_s+originalway.to_i.abs.to_s+Time.new.to_i.to_s # temp uniquenodes table name, typically 51 chars
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db_now='@now'+(rand*100).to_i.to_s+uid.to_s+originalway.to_i.abs.to_s+Time.new.to_i.to_s # 'now' variable name, typically 51 chars
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ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()")
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originalway=originalway.to_i
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oldversion=oldversion.to_i
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RAILS_DEFAULT_LOGGER.info(" Message: putway, id=#{originalway}")
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# -- Temporary check for null IDs
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points.each do |a|
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if a[2]==0 or a[2].nil? then return -2,"Server error - node with id 0 found in way #{originalway}." end
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end
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# -- 3. read original way into memory
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xc={}; yc={}; tagc={}; vc={}
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if originalway>0
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way=originalway
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if oldversion==0 then r=readwayquery(way,false)
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else r=readwayquery_old(way,oldversion,true) end
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r.each { |row|
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id=row['id'].to_i
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if (id>0) then
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xc[id]=row['longitude'].to_f
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yc[id]=row['latitude' ].to_f
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tagc[id]=row['tags']
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vc[id]=row['visible'].to_i
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end
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}
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ActiveRecord::Base.connection.update("UPDATE current_ways SET timestamp=#{db_now},user_id=#{uid},visible=1 WHERE id=#{way}")
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else
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way=ActiveRecord::Base.connection.insert("INSERT INTO current_ways (user_id,timestamp,visible) VALUES (#{uid},#{db_now},1)")
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end
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# -- 4. get version by inserting new row into ways
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version=ActiveRecord::Base.connection.insert("INSERT INTO ways (id,user_id,timestamp,visible) VALUES (#{way},#{uid},#{db_now},1)")
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# -- 5. compare nodes and update xmin,xmax,ymin,ymax
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xmin=ymin= 999999
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xmax=ymax=-999999
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insertsql=''
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nodelist=[]
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points.each_index do |i|
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xs=coord2long(points[i][0],masterscale,baselong)
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ys=coord2lat(points[i][1],masterscale,basey)
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xmin=[xs,xmin].min; xmax=[xs,xmax].max
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ymin=[ys,ymin].min; ymax=[ys,ymax].max
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node=points[i][2].to_i
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tagstr=array2tag(points[i][4])
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tagsql="'"+sqlescape(tagstr)+"'"
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lat=(ys * 10000000).round
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long=(xs * 10000000).round
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tile=QuadTile.tile_for_point(ys, xs)
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# compare node
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if node<0
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# new node - create
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if renumberednodes[node.to_s].nil?
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newnode=ActiveRecord::Base.connection.insert("INSERT INTO current_nodes ( latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES ( #{lat},#{long},#{db_now},#{uid},1,#{tagsql},#{tile})")
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ActiveRecord::Base.connection.insert("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{newnode},#{lat},#{long},#{db_now},#{uid},1,#{tagsql},#{tile})")
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points[i][2]=newnode
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nodelist.push(newnode)
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renumberednodes[node.to_s]=newnode.to_s
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else
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points[i][2]=renumberednodes[node.to_s].to_i
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end
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elsif xc.has_key?(node)
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nodelist.push(node)
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# old node from original way - update
|
|
if ((xs/0.0000001).round!=(xc[node]/0.0000001).round or (ys/0.0000001).round!=(yc[node]/0.0000001).round or tagstr!=tagc[node] or vc[node]==0)
|
|
ActiveRecord::Base.connection.insert("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{node},#{lat},#{long},#{db_now},#{uid},1,#{tagsql},#{tile})")
|
|
ActiveRecord::Base.connection.update("UPDATE current_nodes SET latitude=#{lat},longitude=#{long},timestamp=#{db_now},user_id=#{uid},tags=#{tagsql},visible=1,tile=#{tile} WHERE id=#{node}")
|
|
end
|
|
else
|
|
# old node, created in another way and now added to this way
|
|
end
|
|
end
|
|
|
|
|
|
# -- 6a. delete any nodes not in modified way
|
|
|
|
createuniquenodes(way,db_uqn,nodelist) # nodes which appear in this way but no other
|
|
|
|
sql=<<-EOF
|
|
INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tile)
|
|
SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0,cn.tile
|
|
FROM current_nodes AS cn,#{db_uqn}
|
|
WHERE cn.id=node_id
|
|
EOF
|
|
ActiveRecord::Base.connection.insert(sql)
|
|
|
|
sql=<<-EOF
|
|
UPDATE current_nodes AS cn, #{db_uqn}
|
|
SET cn.timestamp=#{db_now},cn.visible=0,cn.user_id=#{uid}
|
|
WHERE cn.id=node_id
|
|
EOF
|
|
ActiveRecord::Base.connection.update(sql)
|
|
|
|
deleteuniquenoderelations(db_uqn,uid,db_now)
|
|
ActiveRecord::Base.connection.execute("DROP TEMPORARY TABLE #{db_uqn}")
|
|
|
|
# 6b. insert new version of route into way_nodes
|
|
|
|
insertsql =''
|
|
currentsql=''
|
|
sequence =1
|
|
points.each do |p|
|
|
if insertsql !='' then insertsql +=',' end
|
|
if currentsql!='' then currentsql+=',' end
|
|
insertsql +="(#{way},#{p[2]},#{sequence},#{version})"
|
|
currentsql+="(#{way},#{p[2]},#{sequence})"
|
|
sequence +=1
|
|
end
|
|
|
|
ActiveRecord::Base.connection.execute("DELETE FROM current_way_nodes WHERE id=#{way}");
|
|
ActiveRecord::Base.connection.insert( "INSERT INTO way_nodes (id,node_id,sequence_id,version) VALUES #{insertsql}");
|
|
ActiveRecord::Base.connection.insert( "INSERT INTO current_way_nodes (id,node_id,sequence_id ) VALUES #{currentsql}");
|
|
|
|
# -- 7. insert new way tags
|
|
|
|
insertsql =''
|
|
currentsql=''
|
|
attributes.each do |k,v|
|
|
if v=='' or v.nil? then next end
|
|
if v[0,6]=='(type ' then next end
|
|
if insertsql !='' then insertsql +=',' end
|
|
if currentsql!='' then currentsql+=',' end
|
|
insertsql +="(#{way},'"+sqlescape(k.gsub('|',':'))+"','"+sqlescape(v)+"',#{version})"
|
|
currentsql+="(#{way},'"+sqlescape(k.gsub('|',':'))+"','"+sqlescape(v)+"')"
|
|
end
|
|
|
|
ActiveRecord::Base.connection.execute("DELETE FROM current_way_tags WHERE id=#{way}")
|
|
if (insertsql !='') then ActiveRecord::Base.connection.insert("INSERT INTO way_tags (id,k,v,version) VALUES #{insertsql}" ) end
|
|
if (currentsql!='') then ActiveRecord::Base.connection.insert("INSERT INTO current_way_tags (id,k,v) VALUES #{currentsql}") end
|
|
|
|
[0,originalway,way,renumberednodes,xmin,xmax,ymin,ymax]
|
|
end
|
|
|
|
# ----- putpoi
|
|
# save POI to the database
|
|
|
|
# in: [0] user token (string),
|
|
# [1] original node id (may be negative),
|
|
# [2] projected longitude, [3] projected latitude,
|
|
# [4] hash of tags, [5] visible (0 to delete, 1 otherwise),
|
|
# [6] baselong, [7] basey, [8] masterscale
|
|
# does: saves POI node to the database
|
|
# refuses save if the node has since become part of a way
|
|
# out: [0] 0 (success), [1] original node id (unchanged),
|
|
# [2] new node id
|
|
|
|
def putpoi(args)
|
|
usertoken,id,x,y,tags,visible,baselong,basey,masterscale=args
|
|
uid=getuserid(usertoken)
|
|
if !uid then return -1,"You are not logged in, so the point could not be saved." end
|
|
|
|
db_now='@now'+(rand*100).to_i.to_s+uid.to_s+id.to_i.abs.to_s+Time.new.to_i.to_s # 'now' variable name, typically 51 chars
|
|
ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()")
|
|
|
|
id=id.to_i
|
|
visible=visible.to_i
|
|
if visible==0 then
|
|
# if deleting, check node hasn't become part of a way
|
|
inway=ActiveRecord::Base.connection.select_one("SELECT cw.id FROM current_ways cw,current_way_nodes cwn WHERE cw.id=cwn.id AND cw.visible=1 AND cwn.node_id=#{id} LIMIT 1")
|
|
unless inway.nil? then return -1,"The point has since become part of a way, so you cannot save it as a POI." end
|
|
deleteitemrelations(id,'node',uid,db_now)
|
|
end
|
|
|
|
x=coord2long(x.to_f,masterscale,baselong)
|
|
y=coord2lat(y.to_f,masterscale,basey)
|
|
tagsql="'"+sqlescape(array2tag(tags))+"'"
|
|
lat=(y * 10000000).round
|
|
long=(x * 10000000).round
|
|
tile=QuadTile.tile_for_point(y, x)
|
|
|
|
if (id>0) then
|
|
ActiveRecord::Base.connection.insert("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{id},#{lat},#{long},#{db_now},#{uid},#{visible},#{tagsql},#{tile})");
|
|
ActiveRecord::Base.connection.update("UPDATE current_nodes SET latitude=#{lat},longitude=#{long},timestamp=#{db_now},user_id=#{uid},visible=#{visible},tags=#{tagsql},tile=#{tile} WHERE id=#{id}");
|
|
newid=id
|
|
else
|
|
newid=ActiveRecord::Base.connection.insert("INSERT INTO current_nodes (latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{lat},#{long},#{db_now},#{uid},#{visible},#{tagsql},#{tile})");
|
|
ActiveRecord::Base.connection.update("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{newid},#{lat},#{long},#{db_now},#{uid},#{visible},#{tagsql},#{tile})");
|
|
end
|
|
[0,id,newid]
|
|
end
|
|
|
|
# ----- getpoi
|
|
# read POI from database
|
|
# (only called on revert: POIs are usually read by whichways)
|
|
|
|
# in: [0] node id, [1] baselong, [2] basey, [3] masterscale
|
|
# does: reads POI
|
|
# out: [0] id (unchanged), [1] projected long, [2] projected lat,
|
|
# [3] hash of tags
|
|
|
|
def getpoi(args)
|
|
id,baselong,basey,masterscale=args; id=id.to_i
|
|
poi=ActiveRecord::Base.connection.select_one("SELECT latitude*0.0000001 AS lat,longitude*0.0000001 AS lng,tags "+
|
|
"FROM current_nodes WHERE visible=1 AND id=#{id}")
|
|
if poi.nil? then return [nil,nil,nil,''] end
|
|
[id,
|
|
long2coord(poi['lng'].to_f,baselong,masterscale),
|
|
lat2coord(poi['lat'].to_f,basey,masterscale),
|
|
tag2array(poi['tags'])]
|
|
end
|
|
|
|
# ----- deleteway
|
|
# delete way and constituent nodes from database
|
|
|
|
# in: [0] user token (string), [1] way id
|
|
# does: deletes way from db and any constituent nodes not used elsewhere
|
|
# also removes ways/nodes from any relations they're in
|
|
# out: [0] 0 (success), [1] way id (unchanged)
|
|
|
|
def deleteway(args)
|
|
usertoken,way=args
|
|
|
|
RAILS_DEFAULT_LOGGER.info(" Message: deleteway, id=#{way}")
|
|
uid=getuserid(usertoken)
|
|
if !uid then return -1,"You are not logged in, so the way could not be deleted." end
|
|
|
|
way=way.to_i
|
|
db_uqn='unin'+(rand*100).to_i.to_s+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # temp uniquenodes table name, typically 51 chars
|
|
db_now='@now'+(rand*100).to_i.to_s+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # 'now' variable name, typically 51 chars
|
|
ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()")
|
|
|
|
# - delete any otherwise unused nodes
|
|
|
|
createuniquenodes(way,db_uqn,[])
|
|
|
|
# unless (preserve.empty?) then
|
|
# ActiveRecord::Base.connection.execute("DELETE FROM #{db_uqn} WHERE node_id IN ("+preserve.join(',')+")")
|
|
# end
|
|
|
|
sql=<<-EOF
|
|
INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tile)
|
|
SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0,cn.tile
|
|
FROM current_nodes AS cn,#{db_uqn}
|
|
WHERE cn.id=node_id
|
|
EOF
|
|
ActiveRecord::Base.connection.insert(sql)
|
|
|
|
sql=<<-EOF
|
|
UPDATE current_nodes AS cn, #{db_uqn}
|
|
SET cn.timestamp=#{db_now},cn.visible=0,cn.user_id=#{uid}
|
|
WHERE cn.id=node_id
|
|
EOF
|
|
ActiveRecord::Base.connection.update(sql)
|
|
|
|
deleteuniquenoderelations(db_uqn,uid,db_now)
|
|
ActiveRecord::Base.connection.execute("DROP TEMPORARY TABLE #{db_uqn}")
|
|
|
|
# - delete way
|
|
|
|
ActiveRecord::Base.connection.insert("INSERT INTO ways (id,user_id,timestamp,visible) VALUES (#{way},#{uid},#{db_now},0)")
|
|
ActiveRecord::Base.connection.update("UPDATE current_ways SET user_id=#{uid},timestamp=#{db_now},visible=0 WHERE id=#{way}")
|
|
ActiveRecord::Base.connection.execute("DELETE FROM current_way_nodes WHERE id=#{way}")
|
|
ActiveRecord::Base.connection.execute("DELETE FROM current_way_tags WHERE id=#{way}")
|
|
deleteitemrelations(way,'way',uid,db_now)
|
|
[0,way]
|
|
end
|
|
|
|
|
|
|
|
# ====================================================================
|
|
# Support functions for remote calls
|
|
|
|
def readwayquery(id,insistonvisible)
|
|
sql=<<-EOF
|
|
SELECT latitude*0.0000001 AS latitude,longitude*0.0000001 AS longitude,current_nodes.id,tags,visible
|
|
FROM current_way_nodes,current_nodes
|
|
WHERE current_way_nodes.id=#{id}
|
|
AND current_way_nodes.node_id=current_nodes.id
|
|
EOF
|
|
if insistonvisible then sql+=" AND current_nodes.visible=1 " end
|
|
sql+=" ORDER BY sequence_id"
|
|
ActiveRecord::Base.connection.select_all(sql)
|
|
end
|
|
|
|
def getlastversion(id,version)
|
|
row=ActiveRecord::Base.connection.select_one("SELECT version FROM ways WHERE id=#{id} AND visible=1 ORDER BY version DESC LIMIT 1")
|
|
row['version']
|
|
end
|
|
|
|
def readwayquery_old(id,version,historic)
|
|
# Node handling on undelete (historic=false):
|
|
# - always use the node specified, even if it's moved
|
|
|
|
# Node handling on revert (historic=true):
|
|
# - if it's a visible node, use a new node id (i.e. not mucking up the old one)
|
|
# which means the SWF needs to allocate new ids
|
|
# - if it's an invisible node, we can reuse the old node id
|
|
|
|
# get node list from specified version of way,
|
|
# and the _current_ lat/long/tags of each node
|
|
|
|
row=ActiveRecord::Base.connection.select_one("SELECT timestamp FROM ways WHERE version=#{version} AND id=#{id}")
|
|
waytime=row['timestamp']
|
|
|
|
sql=<<-EOF
|
|
SELECT cn.id,visible,latitude*0.0000001 AS latitude,longitude*0.0000001 AS longitude,tags
|
|
FROM way_nodes wn,current_nodes cn
|
|
WHERE wn.version=#{version}
|
|
AND wn.id=#{id}
|
|
AND wn.node_id=cn.id
|
|
ORDER BY sequence_id
|
|
EOF
|
|
rows=ActiveRecord::Base.connection.select_all(sql)
|
|
|
|
# if historic (full revert), get the old version of each node
|
|
# - if it's in another way now, generate a new id
|
|
# - if it's not in another way, use the old ID
|
|
if historic then
|
|
rows.each_index do |i|
|
|
sql=<<-EOF
|
|
SELECT latitude*0.0000001 AS latitude,longitude*0.0000001 AS longitude,tags,cwn.id AS currentway
|
|
FROM nodes n
|
|
LEFT JOIN current_way_nodes cwn
|
|
ON cwn.node_id=n.id
|
|
WHERE n.id=#{rows[i]['id']}
|
|
AND n.timestamp<="#{waytime}"
|
|
AND cwn.id!=#{id}
|
|
ORDER BY n.timestamp DESC
|
|
LIMIT 1
|
|
EOF
|
|
row=ActiveRecord::Base.connection.select_one(sql)
|
|
unless row.nil? then
|
|
nx=row['longitude'].to_f
|
|
ny=row['latitude'].to_f
|
|
if (row['currentway'] && (nx!=rows[i]['longitude'].to_f or ny!=rows[i]['latitude'].to_f or row['tags']!=rows[i]['tags'])) then rows[i]['id']=-1 end
|
|
rows[i]['longitude']=nx
|
|
rows[i]['latitude' ]=ny
|
|
rows[i]['tags' ]=row['tags']
|
|
end
|
|
end
|
|
end
|
|
rows
|
|
end
|
|
|
|
def createuniquenodes(way,uqn_name,nodelist)
|
|
# Find nodes which appear in this way but no others
|
|
sql=<<-EOF
|
|
CREATE TEMPORARY TABLE #{uqn_name}
|
|
SELECT a.node_id
|
|
FROM (SELECT DISTINCT node_id FROM current_way_nodes
|
|
WHERE id=#{way}) a
|
|
LEFT JOIN current_way_nodes b
|
|
ON b.node_id=a.node_id
|
|
AND b.id!=#{way}
|
|
WHERE b.node_id IS NULL
|
|
EOF
|
|
unless nodelist.empty? then
|
|
sql+="AND a.node_id NOT IN ("+nodelist.join(',')+")"
|
|
end
|
|
ActiveRecord::Base.connection.execute(sql)
|
|
end
|
|
|
|
|
|
|
|
# ====================================================================
|
|
# Relations handling
|
|
# deleteuniquenoderelations(uqn_name,uid,db_now)
|
|
# deleteitemrelations(way|node,'way'|'node',uid,db_now)
|
|
|
|
def deleteuniquenoderelations(uqn_name,uid,db_now)
|
|
sql=<<-EOF
|
|
SELECT node_id,cr.id FROM #{uqn_name},current_relation_members crm,current_relations cr
|
|
WHERE crm.member_id=node_id
|
|
AND crm.member_type='node'
|
|
AND crm.id=cr.id
|
|
AND cr.visible=1
|
|
EOF
|
|
|
|
relnodes=ActiveRecord::Base.connection.select_all(sql)
|
|
relnodes.each do |a|
|
|
removefromrelation(a['node_id'],'node',a['id'],uid,db_now)
|
|
end
|
|
end
|
|
|
|
def deleteitemrelations(objid,type,uid,db_now)
|
|
sql=<<-EOF
|
|
SELECT cr.id FROM current_relation_members crm,current_relations cr
|
|
WHERE crm.member_id=#{objid}
|
|
AND crm.member_type='#{type}'
|
|
AND crm.id=cr.id
|
|
AND cr.visible=1
|
|
EOF
|
|
|
|
relways=ActiveRecord::Base.connection.select_all(sql)
|
|
relways.each do |a|
|
|
removefromrelation(objid,type,a['id'],uid,db_now)
|
|
end
|
|
end
|
|
|
|
def removefromrelation(objid,type,relation,uid,db_now)
|
|
rver=ActiveRecord::Base.connection.insert("INSERT INTO relations (id,user_id,timestamp,visible) VALUES (#{relation},#{uid},#{db_now},1)")
|
|
|
|
tagsql=<<-EOF
|
|
INSERT INTO relation_tags (id,k,v,version)
|
|
SELECT id,k,v,#{rver} FROM current_relation_tags
|
|
WHERE id=#{relation}
|
|
EOF
|
|
ActiveRecord::Base.connection.insert(tagsql)
|
|
|
|
membersql=<<-EOF
|
|
INSERT INTO relation_members (id,member_type,member_id,member_role,version)
|
|
SELECT id,member_type,member_id,member_role,#{rver} FROM current_relation_members
|
|
WHERE id=#{relation}
|
|
AND (member_id!=#{objid} OR member_type!='#{type}')
|
|
EOF
|
|
ActiveRecord::Base.connection.insert(membersql)
|
|
|
|
ActiveRecord::Base.connection.update("UPDATE current_relations SET user_id=#{uid},timestamp=#{db_now} WHERE id=#{relation}")
|
|
ActiveRecord::Base.connection.execute("DELETE FROM current_relation_members WHERE id=#{relation} AND member_type='#{type}' AND member_id=#{objid}")
|
|
end
|
|
|
|
def sqlescape(a)
|
|
a.gsub(/[\000-\037]/,"").gsub("'","''").gsub(92.chr) {92.chr+92.chr}
|
|
end
|
|
|
|
def tag2array(a)
|
|
tags={}
|
|
Tags.split(a) do |k, v|
|
|
tags[k.gsub(':','|')]=v
|
|
end
|
|
tags
|
|
end
|
|
|
|
def array2tag(a)
|
|
tags = []
|
|
a.each do |k,v|
|
|
if v=='' then next end
|
|
if v[0,6]=='(type ' then next end
|
|
tags << [k.gsub('|',':'), v]
|
|
end
|
|
return Tags.join(tags)
|
|
end
|
|
|
|
def getuserid(token)
|
|
if (token =~ /^(.+)\+(.+)$/) then
|
|
user = User.authenticate(:username => $1, :password => $2)
|
|
else
|
|
user = User.authenticate(:token => token)
|
|
end
|
|
|
|
return user ? user.id : nil;
|
|
end
|
|
|
|
|
|
|
|
# ====================================================================
|
|
# AMF read subroutines
|
|
|
|
# ----- getint return two-byte integer
|
|
# ----- getlong return four-byte long
|
|
# ----- getstring return string with two-byte length
|
|
# ----- getdouble return eight-byte double-precision float
|
|
# ----- getobject return object/hash
|
|
# ----- getarray return numeric array
|
|
|
|
def getint(s)
|
|
s.getc*256+s.getc
|
|
end
|
|
|
|
def getlong(s)
|
|
((s.getc*256+s.getc)*256+s.getc)*256+s.getc
|
|
end
|
|
|
|
def getstring(s)
|
|
len=s.getc*256+s.getc
|
|
s.read(len)
|
|
end
|
|
|
|
def getdouble(s)
|
|
a=s.read(8).unpack('G') # G big-endian, E little-endian
|
|
a[0]
|
|
end
|
|
|
|
def getarray(s)
|
|
len=getlong(s)
|
|
arr=[]
|
|
for i in (0..len-1)
|
|
arr[i]=getvalue(s)
|
|
end
|
|
arr
|
|
end
|
|
|
|
def getobject(s)
|
|
arr={}
|
|
while (key=getstring(s))
|
|
if (key=='') then break end
|
|
arr[key]=getvalue(s)
|
|
end
|
|
s.getc # skip the 9 'end of object' value
|
|
arr
|
|
end
|
|
|
|
# ----- getvalue parse and get value
|
|
|
|
def getvalue(s)
|
|
case s.getc
|
|
when 0; return getdouble(s) # number
|
|
when 1; return s.getc # boolean
|
|
when 2; return getstring(s) # string
|
|
when 3; return getobject(s) # object/hash
|
|
when 5; return nil # null
|
|
when 6; return nil # undefined
|
|
when 8; s.read(4) # mixedArray
|
|
return getobject(s) # |
|
|
when 10;return getarray(s) # array
|
|
else; return nil # error
|
|
end
|
|
end
|
|
|
|
# ====================================================================
|
|
# AMF write subroutines
|
|
|
|
# ----- putdata envelope data into AMF writeable form
|
|
# ----- encodevalue pack variables as AMF
|
|
|
|
def putdata(index,n)
|
|
d =encodestring(index+"/onResult")
|
|
d+=encodestring("null")
|
|
d+=[-1].pack("N")
|
|
d+=encodevalue(n)
|
|
end
|
|
|
|
def encodevalue(n)
|
|
case n.class.to_s
|
|
when 'Array'
|
|
a=10.chr+encodelong(n.length)
|
|
n.each do |b|
|
|
a+=encodevalue(b)
|
|
end
|
|
a
|
|
when 'Hash'
|
|
a=3.chr
|
|
n.each do |k,v|
|
|
a+=encodestring(k)+encodevalue(v)
|
|
end
|
|
a+0.chr+0.chr+9.chr
|
|
when 'String'
|
|
2.chr+encodestring(n)
|
|
when 'Bignum','Fixnum','Float'
|
|
0.chr+encodedouble(n)
|
|
when 'NilClass'
|
|
5.chr
|
|
else
|
|
RAILS_DEFAULT_LOGGER.error("Unexpected Ruby type for AMF conversion: "+n.class.to_s)
|
|
end
|
|
end
|
|
|
|
# ----- encodestring encode string with two-byte length
|
|
# ----- encodedouble encode number as eight-byte double precision float
|
|
# ----- encodelong encode number as four-byte long
|
|
|
|
def encodestring(n)
|
|
a,b=n.size.divmod(256)
|
|
a.chr+b.chr+n
|
|
end
|
|
|
|
def encodedouble(n)
|
|
[n].pack('G')
|
|
end
|
|
|
|
def encodelong(n)
|
|
[n].pack('N')
|
|
end
|
|
|
|
# ====================================================================
|
|
# Co-ordinate conversion
|
|
|
|
def lat2coord(a,basey,masterscale)
|
|
-(lat2y(a)-basey)*masterscale+250
|
|
end
|
|
|
|
def long2coord(a,baselong,masterscale)
|
|
(a-baselong)*masterscale+350
|
|
end
|
|
|
|
def lat2y(a)
|
|
180/Math::PI * Math.log(Math.tan(Math::PI/4+a*(Math::PI/180)/2))
|
|
end
|
|
|
|
def coord2lat(a,masterscale,basey)
|
|
y2lat((a-250)/-masterscale+basey)
|
|
end
|
|
|
|
def coord2long(a,masterscale,baselong)
|
|
(a-350)/masterscale+baselong
|
|
end
|
|
|
|
def y2lat(a)
|
|
180/Math::PI * (2*Math.atan(Math.exp(a*Math::PI/180))-Math::PI/2)
|
|
end
|
|
|
|
end
|