1 class AmfController < ApplicationController
5 before_filter :check_write_availability
7 # AMF controller for Potlatch
8 # ---------------------------
9 # All interaction between Potlatch (as a .SWF application) and the
10 # OSM database takes place using this controller. Messages are
11 # encoded in the Actionscript Message Format (AMF).
13 # Public domain. Set your tab width to 4 to read this document. :)
14 # editions Systeme D / Richard Fairhurst 2004-2008
16 # All in/out parameters are floats unless explicitly stated.
17 # Note that in getway/getway_old, SWF object name and way id are
18 #ĂŠidentical and one could probably be eliminated.
20 # to trap errors (getway_old,putway,putpoi,deleteway only):
21 # return(-1,"message") <-- just puts up a dialogue
22 # return(-2,"message") <-- also asks the user to e-mail me
24 # RAILS_DEFAULT_LOGGER.error("Args: #{args[0]}, #{args[1]}, #{args[2]}, #{args[3]}")
26 # ====================================================================
29 # ---- talk process AMF request
32 req=StringIO.new(request.raw_post+0.chr) # Get POST data as request
33 # (cf http://www.ruby-forum.com/topic/122163)
34 req.read(2) # Skip version indicator and client ID
35 results={} # Results of each body
36 renumberednodes={} # Shared across repeated putways
41 headers=getint(req) # Read number of headers
43 headers.times do # Read each header
44 name=getstring(req) # |
45 req.getc # | skip boolean
46 value=getvalue(req) # |
47 header["name"]=value # |
50 bodies=getint(req) # Read number of bodies
51 bodies.times do # Read each body
52 message=getstring(req) # | get message name
53 index=getstring(req) # | get index in response sequence
54 bytes=getlong(req) # | get total size in bytes
55 args=getvalue(req) # | get response (probably an array)
58 when 'getpresets'; results[index]=putdata(index,getpresets)
59 when 'whichways'; results[index]=putdata(index,whichways(args))
60 when 'whichways_deleted'; results[index]=putdata(index,whichways_deleted(args))
61 when 'getway'; results[index]=putdata(index,getway(args))
62 when 'getway_old'; results[index]=putdata(index,getway_old(args))
63 when 'getway_history'; results[index]=putdata(index,getway_history(args))
64 when 'putway'; r=putway(args,renumberednodes)
66 results[index]=putdata(index,r)
67 when 'deleteway'; results[index]=putdata(index,deleteway(args))
68 when 'putpoi'; results[index]=putdata(index,putpoi(args))
69 when 'getpoi'; results[index]=putdata(index,getpoi(args))
76 RAILS_DEFAULT_LOGGER.info(" Response: start")
77 a,b=results.length.divmod(256)
78 render :content_type => "application/x-amf", :text => proc { |response, output|
79 output.write 0.chr+0.chr+0.chr+0.chr+a.chr+b.chr
84 RAILS_DEFAULT_LOGGER.info(" Response: end")
91 # ====================================================================
96 # does: reads tag preset menus, colours, and autocomplete config files
97 # out: [0] presets, [1] presetmenus, [2] presetnames,
98 # [3] colours, [4] casing, [5] areas, [6] autotags
102 RAILS_DEFAULT_LOGGER.info(" Message: getpresets")
106 presetmenus={}; presetmenus['point']=[]; presetmenus['way']=[]; presetmenus['POI']=[]
107 presetnames={}; presetnames['point']={}; presetnames['way']={}; presetnames['POI']={}
110 # StringIO.open(txt) do |file|
111 File.open("#{RAILS_ROOT}/config/potlatch/presets.txt") do |file|
112 file.each_line {|line|
114 if (t=~/(\w+)\/(\w+)/) then
117 presetmenus[presettype].push(presetcategory)
118 presetnames[presettype][presetcategory]=["(no preset)"]
119 elsif (t=~/^(.+):\s?(.+)$/) then
121 presetnames[presettype][presetcategory].push(pre)
123 kv.split(',').each {|a|
124 if (a=~/^(.+)=(.*)$/) then presets[pre][$1]=$2 end
130 # Read colours/styling
131 colours={}; casing={}; areas={}
132 File.open("#{RAILS_ROOT}/config/potlatch/colours.txt") do |file|
133 file.each_line {|line|
135 if (t=~/(\w+)\s+([^\s]+)\s+([^\s]+)\s+([^\s]+)/) then
137 if ($2!='-') then colours[tag]=$2.hex end
138 if ($3!='-') then casing[tag]=$3.hex end
139 if ($4!='-') then areas[tag]=$4.hex end
145 autotags={}; autotags['point']={}; autotags['way']={}; autotags['POI']={};
146 File.open("#{RAILS_ROOT}/config/potlatch/autocomplete.txt") do |file|
147 file.each_line {|line|
149 if (t=~/^(\w+)\/(\w+)\s+(.+)$/) then
150 tag=$1; type=$2; values=$3
151 if values=='-' then autotags[type][tag]=[]
152 else autotags[type][tag]=values.split(',').sort.reverse end
157 [presets,presetmenus,presetnames,colours,casing,areas,autotags]
160 # Find all the way ids and nodes (including tags and projected lat/lng) which aren't part of those ways in an are
162 # The argument is an array containing the following, in order:
163 # 0. minimun longitude
164 # 1. minimum latitude
165 # 2. maximum longitude
166 # 3. maximum latitude
171 xmin = args[0].to_f-0.01
172 ymin = args[1].to_f-0.01
173 xmax = args[2].to_f+0.01
174 ymax = args[3].to_f+0.01
177 masterscale = args[6]
179 RAILS_DEFAULT_LOGGER.info(" Message: whichways, bbox=#{xmin},#{ymin},#{xmax},#{ymax}")
181 # find the way id's in an area
182 nodes_in_area = Node.find_by_area(ymin, xmin, ymax, xmax,:conditions => "visible = 1", :include => :way_nodes)
183 waynodes_in_area = nodes_in_area.collect {|node| node.way_nodes }.flatten
184 ways = waynodes_in_area.collect {|way_node| way_node.id[0]}.uniq
186 # find the node ids in an area that aren't part of ways
187 node_ids_in_area = nodes_in_area.collect {|node| node.id}.uniq
188 node_ids_used_in_ways = waynodes_in_area.collect {|way_node| way_node.node_id}.uniq
189 node_ids_not_used_in_area = node_ids_in_area - node_ids_used_in_ways
190 nodes_not_used_in_area = Node.find(node_ids_not_used_in_area)
191 points = nodes_not_used_in_area.collect {|n| [n.id, n.lon_potlatch(baselong,masterscale), n.lat_potlatch(basey,masterscale), n.tags_as_hash] }
196 # ----- whichways_deleted
197 # return array of deleted ways in current bounding box
199 # does: finds all deleted ways with a deleted node in bounding box
200 # out: [0] array of way ids
201 def whichways_deleted(args)
202 xmin = args[0].to_f-0.01
203 ymin = args[1].to_f-0.01
204 xmax = args[2].to_f+0.01
205 ymax = args[3].to_f+0.01
208 masterscale = args[6]
211 SELECT DISTINCT current_ways.id
212 FROM current_nodes,way_nodes,current_ways
213 WHERE #{OSM.sql_for_area(ymin, xmin, ymax, xmax, "current_nodes.")}
214 AND way_nodes.node_id=current_nodes.id
215 AND way_nodes.id=current_ways.id
216 AND current_nodes.visible=0
217 AND current_ways.visible=0
219 waylist = ActiveRecord::Base.connection.select_all(sql)
220 ways = waylist.collect {|a| a['id'].to_i }
224 # Get a way with all of it's nodes and tags
225 # The input is an array with the following components, in order:
226 # 0. SWF object name (String?) - fuck knows
227 # 1. wayid (String?) - the ID of the way to get
228 # 2. baselong - fuck knows
229 # 3. basey - fuck knows
230 # 4. masterscale - fuck knows
232 # The output is an array which contains all the nodes (with projected latitude and longitude) and tags for a way (and all the nodes tags). It also has the way's unprojected (WGS84) bbox.
234 # FIXME: The server really shouldn't be figuring out a ways bounding box and doing projection for potlatch
235 # FIXME: the argument splitting should be done in the 'talk' method, not here
238 objname,wayid,baselong,basey,masterscale = args
241 RAILS_DEFAULT_LOGGER.info(" Message: getway, id=#{wayid}")
243 way = Way.find_eager(wayid)
248 way.way_nodes.each do |way_node|
249 node = way_node.node # get the node record
250 projected_longitude = node.lon_potlatch(baselong,masterscale) # do projection for potlatch
251 projected_latitude = node.lat_potlatch(basey,masterscale)
253 tags_hash = node.tags_as_hash
255 points << [projected_longitude, projected_latitude, id, nil, tags_hash] # FIXME remove the nil in potlatch. performance matters y'know!
256 long_array << projected_longitude
257 lat_array << projected_latitude
260 [objname,points,way.tags,long_array.min,long_array.max,lat_array.min,lat_array.max]
264 # returns old version of way
266 # in: [0] SWF object name, [1] way id,
267 # [2] way version to get (or -1 for "last deleted version")
268 # [3] baselong, [4] basey, [5] masterscale
269 # does: gets old version of way and all constituent nodes
270 # for undelete, always uses the most recent version of each node
271 # (even if it's moved)
272 # for revert, uses the historic version of each node, but if that node is
273 # still visible and has been changed since, generates a new node id
274 # out: [0] 0 (code for success), [1] SWF object name,
275 # [2] array of points (as getway _except_ [3] is node.visible?, 0 or 1),
276 # [4] xmin, [5] xmax, [6] ymin, [7] ymax (unprojected bbox),
280 RAILS_DEFAULT_LOGGER.info(" Message: getway_old (server is #{SERVER_URL})")
281 # if SERVER_URL=="www.openstreetmap.org" then return -1,"Revert is not currently enabled on the OpenStreetMap server." end
283 objname,wayid,version,baselong,basey,masterscale=args
285 version = version.to_i
287 xmax = ymax = -999999
291 version=getlastversion(wayid,version)
295 readwayquery_old(wayid,version,historic).each { |row|
296 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)]
297 xmin=[xmin,row['longitude'].to_f].min
298 xmax=[xmax,row['longitude'].to_f].max
299 ymin=[ymin,row['latitude' ].to_f].min
300 ymax=[ymax,row['latitude' ].to_f].max
303 # get tags from this version
305 attrlist=ActiveRecord::Base.connection.select_all "SELECT k,v FROM way_tags WHERE id=#{wayid} AND version=#{version}"
306 attrlist.each {|a| attributes[a['k'].gsub(':','|')]=a['v'] }
307 attributes['history']="Retrieved from v"+version.to_s
309 [0,objname,points,attributes,xmin,xmax,ymin,ymax,version]
312 # ----- getway_history
313 # find history of a way
316 # does: finds history of a way
317 # out: [0] array of previous versions (where each is
318 # [0] version, [1] db timestamp (string),
319 # [2] visible 0 or 1,
320 # [3] username or 'anonymous' (string))
322 def getway_history(args)
326 SELECT version,timestamp,visible,display_name,data_public
328 WHERE ways.id=#{wayid}
329 AND ways.user_id=users.id
331 ORDER BY version DESC
333 histlist=ActiveRecord::Base.connection.select_all(sql)
334 histlist.each { |row|
335 if row['data_public'].to_i==1 then user=row['display_name'] else user='anonymous' end
336 history<<[row['version'],row['timestamp'],row['visible'],user]
342 # saves a way to the database
344 # in: [0] user token (string),
345 # [1] original way id (may be negative),
346 # [2] array of points (as getway/getway_old),
347 # [3] hash of way tags,
348 # [4] original way version (0 if not a reverted/undeleted way),
349 # [5] baselong, [6] basey, [7] masterscale
350 # does: saves way to the database
351 # all constituent nodes are created/updated as necessary
352 # (or deleted if they were in the old version and are otherwise unused)
353 # out: [0] 0 (code for success), [1] original way id (unchanged),
354 # [2] new way id, [3] hash of renumbered nodes (old id=>new id),
355 # [4] xmin, [5] xmax, [6] ymin, [7] ymax (unprojected bbox)
357 def putway(args,renumberednodes)
358 RAILS_DEFAULT_LOGGER.info(" putway started")
359 usertoken,originalway,points,attributes,oldversion,baselong,basey,masterscale=args
360 uid=getuserid(usertoken)
361 if !uid then return -1,"You are not logged in, so the way could not be saved." end
363 RAILS_DEFAULT_LOGGER.info(" putway authenticated happily")
364 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
365 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
366 ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()")
367 originalway=originalway.to_i
368 oldversion=oldversion.to_i
370 RAILS_DEFAULT_LOGGER.info(" Message: putway, id=#{originalway}")
372 # -- Temporary check for null IDs
375 if a[2]==0 or a[2].nil? then return -2,"Server error - node with id 0 found in way #{originalway}." end
378 # -- 3. read original way into memory
380 xc={}; yc={}; tagc={}; vc={}
383 if oldversion==0 then r=readwayquery(way,false)
384 else r=readwayquery_old(way,oldversion,true) end
388 xc[id]=row['longitude'].to_f
389 yc[id]=row['latitude' ].to_f
391 vc[id]=row['visible'].to_i
394 ActiveRecord::Base.connection.update("UPDATE current_ways SET timestamp=#{db_now},user_id=#{uid},visible=1 WHERE id=#{way}")
396 way=ActiveRecord::Base.connection.insert("INSERT INTO current_ways (user_id,timestamp,visible) VALUES (#{uid},#{db_now},1)")
399 # -- 4. get version by inserting new row into ways
401 version=ActiveRecord::Base.connection.insert("INSERT INTO ways (id,user_id,timestamp,visible) VALUES (#{way},#{uid},#{db_now},1)")
403 # -- 5. compare nodes and update xmin,xmax,ymin,ymax
410 points.each_index do |i|
411 xs=coord2long(points[i][0],masterscale,baselong)
412 ys=coord2lat(points[i][1],masterscale,basey)
413 xmin=[xs,xmin].min; xmax=[xs,xmax].max
414 ymin=[ys,ymin].min; ymax=[ys,ymax].max
415 node=points[i][2].to_i
416 tagstr=array2tag(points[i][4])
417 tagsql="'"+sqlescape(tagstr)+"'"
418 lat=(ys * 10000000).round
419 long=(xs * 10000000).round
420 tile=QuadTile.tile_for_point(ys, xs)
425 if renumberednodes[node.to_s].nil?
426 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})")
427 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})")
429 nodelist.push(newnode)
430 renumberednodes[node.to_s]=newnode.to_s
432 points[i][2]=renumberednodes[node.to_s].to_i
435 elsif xc.has_key?(node)
437 # old node from original way - update
438 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)
439 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})")
440 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}")
443 # old node, created in another way and now added to this way
448 # -- 6a. delete any nodes not in modified way
450 createuniquenodes(way,db_uqn,nodelist) # nodes which appear in this way but no other
453 INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tile)
454 SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0,cn.tile
455 FROM current_nodes AS cn,#{db_uqn}
458 ActiveRecord::Base.connection.insert(sql)
461 UPDATE current_nodes AS cn, #{db_uqn}
462 SET cn.timestamp=#{db_now},cn.visible=0,cn.user_id=#{uid}
465 ActiveRecord::Base.connection.update(sql)
467 deleteuniquenoderelations(db_uqn,uid,db_now)
468 ActiveRecord::Base.connection.execute("DROP TEMPORARY TABLE #{db_uqn}")
470 # 6b. insert new version of route into way_nodes
476 if insertsql !='' then insertsql +=',' end
477 if currentsql!='' then currentsql+=',' end
478 insertsql +="(#{way},#{p[2]},#{sequence},#{version})"
479 currentsql+="(#{way},#{p[2]},#{sequence})"
483 ActiveRecord::Base.connection.execute("DELETE FROM current_way_nodes WHERE id=#{way}");
484 ActiveRecord::Base.connection.insert( "INSERT INTO way_nodes (id,node_id,sequence_id,version) VALUES #{insertsql}");
485 ActiveRecord::Base.connection.insert( "INSERT INTO current_way_nodes (id,node_id,sequence_id ) VALUES #{currentsql}");
487 # -- 7. insert new way tags
491 attributes.each do |k,v|
492 if v=='' or v.nil? then next end
493 if v[0,6]=='(type ' then next end
494 if insertsql !='' then insertsql +=',' end
495 if currentsql!='' then currentsql+=',' end
496 insertsql +="(#{way},'"+sqlescape(k.gsub('|',':'))+"','"+sqlescape(v)+"',#{version})"
497 currentsql+="(#{way},'"+sqlescape(k.gsub('|',':'))+"','"+sqlescape(v)+"')"
500 ActiveRecord::Base.connection.execute("DELETE FROM current_way_tags WHERE id=#{way}")
501 if (insertsql !='') then ActiveRecord::Base.connection.insert("INSERT INTO way_tags (id,k,v,version) VALUES #{insertsql}" ) end
502 if (currentsql!='') then ActiveRecord::Base.connection.insert("INSERT INTO current_way_tags (id,k,v) VALUES #{currentsql}") end
504 [0,originalway,way,renumberednodes,xmin,xmax,ymin,ymax]
508 # save POI to the database
510 # in: [0] user token (string),
511 # [1] original node id (may be negative),
512 # [2] projected longitude, [3] projected latitude,
513 # [4] hash of tags, [5] visible (0 to delete, 1 otherwise),
514 # [6] baselong, [7] basey, [8] masterscale
515 # does: saves POI node to the database
516 # refuses save if the node has since become part of a way
517 # out: [0] 0 (success), [1] original node id (unchanged),
521 usertoken,id,x,y,tags,visible,baselong,basey,masterscale=args
522 uid=getuserid(usertoken)
523 if !uid then return -1,"You are not logged in, so the point could not be saved." end
525 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
526 ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()")
531 # if deleting, check node hasn't become part of a way
532 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")
533 unless inway.nil? then return -1,"The point has since become part of a way, so you cannot save it as a POI." end
534 deleteitemrelations(id,'node',uid,db_now)
537 x=coord2long(x.to_f,masterscale,baselong)
538 y=coord2lat(y.to_f,masterscale,basey)
539 tagsql="'"+sqlescape(array2tag(tags))+"'"
540 lat=(y * 10000000).round
541 long=(x * 10000000).round
542 tile=QuadTile.tile_for_point(y, x)
545 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})");
546 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}");
549 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})");
550 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})");
556 # read POI from database
557 # (only called on revert: POIs are usually read by whichways)
559 # in: [0] node id, [1] baselong, [2] basey, [3] masterscale
561 # out: [0] id (unchanged), [1] projected long, [2] projected lat,
565 id,baselong,basey,masterscale=args; id=id.to_i
566 poi=ActiveRecord::Base.connection.select_one("SELECT latitude*0.0000001 AS lat,longitude*0.0000001 AS lng,tags "+
567 "FROM current_nodes WHERE visible=1 AND id=#{id}")
568 if poi.nil? then return [nil,nil,nil,''] end
570 long2coord(poi['lng'].to_f,baselong,masterscale),
571 lat2coord(poi['lat'].to_f,basey,masterscale),
572 tag2array(poi['tags'])]
576 # delete way and constituent nodes from database
578 # in: [0] user token (string), [1] way id
579 # does: deletes way from db and any constituent nodes not used elsewhere
580 # also removes ways/nodes from any relations they're in
581 # out: [0] 0 (success), [1] way id (unchanged)
586 RAILS_DEFAULT_LOGGER.info(" Message: deleteway, id=#{way}")
587 uid=getuserid(usertoken)
588 if !uid then return -1,"You are not logged in, so the way could not be deleted." end
591 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
592 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
593 ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()")
595 # - delete any otherwise unused nodes
597 createuniquenodes(way,db_uqn,[])
599 # unless (preserve.empty?) then
600 # ActiveRecord::Base.connection.execute("DELETE FROM #{db_uqn} WHERE node_id IN ("+preserve.join(',')+")")
604 INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tile)
605 SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0,cn.tile
606 FROM current_nodes AS cn,#{db_uqn}
609 ActiveRecord::Base.connection.insert(sql)
612 UPDATE current_nodes AS cn, #{db_uqn}
613 SET cn.timestamp=#{db_now},cn.visible=0,cn.user_id=#{uid}
616 ActiveRecord::Base.connection.update(sql)
618 deleteuniquenoderelations(db_uqn,uid,db_now)
619 ActiveRecord::Base.connection.execute("DROP TEMPORARY TABLE #{db_uqn}")
623 ActiveRecord::Base.connection.insert("INSERT INTO ways (id,user_id,timestamp,visible) VALUES (#{way},#{uid},#{db_now},0)")
624 ActiveRecord::Base.connection.update("UPDATE current_ways SET user_id=#{uid},timestamp=#{db_now},visible=0 WHERE id=#{way}")
625 ActiveRecord::Base.connection.execute("DELETE FROM current_way_nodes WHERE id=#{way}")
626 ActiveRecord::Base.connection.execute("DELETE FROM current_way_tags WHERE id=#{way}")
627 deleteitemrelations(way,'way',uid,db_now)
633 # ====================================================================
634 # Support functions for remote calls
636 def readwayquery(id,insistonvisible)
638 SELECT latitude*0.0000001 AS latitude,longitude*0.0000001 AS longitude,current_nodes.id,tags,visible
639 FROM current_way_nodes,current_nodes
640 WHERE current_way_nodes.id=#{id}
641 AND current_way_nodes.node_id=current_nodes.id
643 if insistonvisible then sql+=" AND current_nodes.visible=1 " end
644 sql+=" ORDER BY sequence_id"
645 ActiveRecord::Base.connection.select_all(sql)
648 def getlastversion(id,version)
649 row=ActiveRecord::Base.connection.select_one("SELECT version FROM ways WHERE id=#{id} AND visible=1 ORDER BY version DESC LIMIT 1")
653 def readwayquery_old(id,version,historic)
654 # Node handling on undelete (historic=false):
655 # - always use the node specified, even if it's moved
657 # Node handling on revert (historic=true):
658 # - if it's a visible node, use a new node id (i.e. not mucking up the old one)
659 # which means the SWF needs to allocate new ids
660 # - if it's an invisible node, we can reuse the old node id
662 # get node list from specified version of way,
663 # and the _current_ lat/long/tags of each node
665 row=ActiveRecord::Base.connection.select_one("SELECT timestamp FROM ways WHERE version=#{version} AND id=#{id}")
666 waytime=row['timestamp']
669 SELECT cn.id,visible,latitude*0.0000001 AS latitude,longitude*0.0000001 AS longitude,tags
670 FROM way_nodes wn,current_nodes cn
671 WHERE wn.version=#{version}
676 rows=ActiveRecord::Base.connection.select_all(sql)
678 # if historic (full revert), get the old version of each node
679 # - if it's in another way now, generate a new id
680 # - if it's not in another way, use the old ID
682 rows.each_index do |i|
684 SELECT latitude*0.0000001 AS latitude,longitude*0.0000001 AS longitude,tags,cwn.id AS currentway
686 LEFT JOIN current_way_nodes cwn
688 WHERE n.id=#{rows[i]['id']}
689 AND n.timestamp<="#{waytime}"
691 ORDER BY n.timestamp DESC
694 row=ActiveRecord::Base.connection.select_one(sql)
696 nx=row['longitude'].to_f
697 ny=row['latitude'].to_f
698 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
699 rows[i]['longitude']=nx
700 rows[i]['latitude' ]=ny
701 rows[i]['tags' ]=row['tags']
708 def createuniquenodes(way,uqn_name,nodelist)
709 # Find nodes which appear in this way but no others
711 CREATE TEMPORARY TABLE #{uqn_name}
713 FROM (SELECT DISTINCT node_id FROM current_way_nodes
715 LEFT JOIN current_way_nodes b
716 ON b.node_id=a.node_id
718 WHERE b.node_id IS NULL
720 unless nodelist.empty? then
721 sql+="AND a.node_id NOT IN ("+nodelist.join(',')+")"
723 ActiveRecord::Base.connection.execute(sql)
728 # ====================================================================
730 # deleteuniquenoderelations(uqn_name,uid,db_now)
731 # deleteitemrelations(way|node,'way'|'node',uid,db_now)
733 def deleteuniquenoderelations(uqn_name,uid,db_now)
735 SELECT node_id,cr.id FROM #{uqn_name},current_relation_members crm,current_relations cr
736 WHERE crm.member_id=node_id
737 AND crm.member_type='node'
742 relnodes=ActiveRecord::Base.connection.select_all(sql)
744 removefromrelation(a['node_id'],'node',a['id'],uid,db_now)
748 def deleteitemrelations(objid,type,uid,db_now)
750 SELECT cr.id FROM current_relation_members crm,current_relations cr
751 WHERE crm.member_id=#{objid}
752 AND crm.member_type='#{type}'
757 relways=ActiveRecord::Base.connection.select_all(sql)
759 removefromrelation(objid,type,a['id'],uid,db_now)
763 def removefromrelation(objid,type,relation,uid,db_now)
764 rver=ActiveRecord::Base.connection.insert("INSERT INTO relations (id,user_id,timestamp,visible) VALUES (#{relation},#{uid},#{db_now},1)")
767 INSERT INTO relation_tags (id,k,v,version)
768 SELECT id,k,v,#{rver} FROM current_relation_tags
771 ActiveRecord::Base.connection.insert(tagsql)
774 INSERT INTO relation_members (id,member_type,member_id,member_role,version)
775 SELECT id,member_type,member_id,member_role,#{rver} FROM current_relation_members
777 AND (member_id!=#{objid} OR member_type!='#{type}')
779 ActiveRecord::Base.connection.insert(membersql)
781 ActiveRecord::Base.connection.update("UPDATE current_relations SET user_id=#{uid},timestamp=#{db_now} WHERE id=#{relation}")
782 ActiveRecord::Base.connection.execute("DELETE FROM current_relation_members WHERE id=#{relation} AND member_type='#{type}' AND member_id=#{objid}")
786 a.gsub(/[\000-\037]/,"").gsub("'","''").gsub(92.chr) {92.chr+92.chr}
791 Tags.split(a) do |k, v|
792 tags[k.gsub(':','|')]=v
800 if v=='' then next end
801 if v[0,6]=='(type ' then next end
802 tags << [k.gsub('|',':'), v]
804 return Tags.join(tags)
808 if (token =~ /^(.+)\+(.+)$/) then
809 user = User.authenticate(:username => $1, :password => $2)
811 user = User.authenticate(:token => token)
814 return user ? user.id : nil;
819 # ====================================================================
820 # AMF read subroutines
822 # ----- getint return two-byte integer
823 # ----- getlong return four-byte long
824 # ----- getstring return string with two-byte length
825 # ----- getdouble return eight-byte double-precision float
826 # ----- getobject return object/hash
827 # ----- getarray return numeric array
834 ((s.getc*256+s.getc)*256+s.getc)*256+s.getc
838 len=s.getc*256+s.getc
843 a=s.read(8).unpack('G') # G big-endian, E little-endian
858 while (key=getstring(s))
859 if (key=='') then break end
862 s.getc # skip the 9 'end of object' value
866 # ----- getvalue parse and get value
870 when 0; return getdouble(s) # number
871 when 1; return s.getc # boolean
872 when 2; return getstring(s) # string
873 when 3; return getobject(s) # object/hash
874 when 5; return nil # null
875 when 6; return nil # undefined
876 when 8; s.read(4) # mixedArray
877 return getobject(s) # |
878 when 10;return getarray(s) # array
879 else; return nil # error
883 # ====================================================================
884 # AMF write subroutines
886 # ----- putdata envelope data into AMF writeable form
887 # ----- encodevalue pack variables as AMF
890 d =encodestring(index+"/onResult")
891 d+=encodestring("null")
899 a=10.chr+encodelong(n.length)
907 a+=encodestring(k)+encodevalue(v)
911 2.chr+encodestring(n)
912 when 'Bignum','Fixnum','Float'
913 0.chr+encodedouble(n)
917 RAILS_DEFAULT_LOGGER.error("Unexpected Ruby type for AMF conversion: "+n.class.to_s)
921 # ----- encodestring encode string with two-byte length
922 # ----- encodedouble encode number as eight-byte double precision float
923 # ----- encodelong encode number as four-byte long
926 a,b=n.size.divmod(256)
938 # ====================================================================
939 # Co-ordinate conversion
941 def lat2coord(a,basey,masterscale)
942 -(lat2y(a)-basey)*masterscale+250
945 def long2coord(a,baselong,masterscale)
946 (a-baselong)*masterscale+350
950 180/Math::PI * Math.log(Math.tan(Math::PI/4+a*(Math::PI/180)/2))
953 def coord2lat(a,masterscale,basey)
954 y2lat((a-250)/-masterscale+basey)
957 def coord2long(a,masterscale,baselong)
958 (a-350)/masterscale+baselong
962 180/Math::PI * (2*Math.atan(Math.exp(a*Math::PI/180))-Math::PI/2)