1 class AmfController < ApplicationController
5 # RAILS_DEFAULT_LOGGER.error("Args: #{args[0]}, #{args[1]}, #{args[2]}, #{args[3]}")
7 # ====================================================================
10 # ---- talk process AMF request
13 req=StringIO.new(request.raw_post) # Get POST data as request
14 req.read(2) # Skip version indicator and client ID
15 results={} # Results of each body
20 headers=getint(req) # Read number of headers
22 headers.times do # Read each header
23 name=getstring(req) # |
24 req.getc # | skip boolean
25 value=getvalue(req) # |
26 header["name"]=value # |
29 bodies=getint(req) # Read number of bodies
30 bodies.times do # Read each body
31 message=getstring(req) # | get message name
32 index=getstring(req) # | get index in response sequence
33 bytes=getlong(req) # | get total size in bytes
34 args=getvalue(req) # | get response (probably an array)
37 when 'getpresets'; results[index]=putdata(index,getpresets)
38 when 'whichways'; results[index]=putdata(index,whichways(args))
39 when 'getway'; results[index]=putdata(index,getway(args))
40 when 'putway'; results[index]=putdata(index,putway(args))
41 when 'deleteway'; results[index]=putdata(index,deleteway(args))
48 response.headers["Content-Type"]="application/x-amf"
49 a,b=results.length.divmod(256)
50 ans=0.chr+0.chr+0.chr+0.chr+a.chr+b.chr
60 # ====================================================================
64 # return presets,presetmenus and presetnames arrays
68 presetmenus={}; presetmenus['point']=[]; presetmenus['way']=[]
69 presetnames={}; presetnames['point']={}; presetnames['way']={}
73 # File.open("config/potlatch/presets.txt") do |file|
75 # Temporary patch to get around filepath problem
76 # To remove this patch and make the code nice again:
77 # 1. uncomment above line
78 # 2. fix the path in the above line
79 # 3. delete this here document, and the following line (StringIO....)
83 motorway: highway=motorway,ref=(type road number)
84 trunk road: highway=trunk,ref=(type road number),name=(type road name)
85 primary road: highway=primary,ref=(type road number),name=(type road name)
86 secondary road: highway=secondary,ref=(type road number),name=(type road name)
87 residential road: highway=residential,name=(type road name)
88 unclassified road: highway=unclassified,name=(type road name)
91 footpath: highway=footway,foot=yes
92 bridleway: highway=bridleway,foot=yes,horse=yes,bicycle=yes
93 byway: highway=byway,foot=yes,horse=yes,bicycle=yes,motorcar=yes
94 permissive path: highway=footway,foot=permissive
97 cycle lane: highway=cycleway,cycleway=lane,ncn_ref=
98 cycle track: highway=cycleway,cycleway=track,ncn_ref=
99 cycle lane (NCN): highway=cycleway,cycleway=lane,name=(type name here),ncn_ref=(type route number)
100 cycle track (NCN): highway=cycleway,cycleway=track,name=(type name here),ncn_ref=(type route number)
103 canal: waterway=canal,name=(type name here)
104 navigable river: waterway=river,boat=yes,name=(type name here)
105 navigable drain: waterway=drain,boat=yes,name=(type name here)
106 derelict canal: waterway=derelict_canal,name=(type name here)
107 unnavigable river: waterway=river,boat=no,name=(type name here)
108 unnavigable drain: waterway=drain,boat=no,name=(type name here)
111 railway: railway=rail
112 tramway: railway=tram
113 light railway: railway=light_rail
114 preserved railway: railway=preserved
115 disused railway tracks: railway=disused
116 course of old railway: railway=abandoned
119 mini roundabout: highway=mini_roundabout
120 traffic lights: highway=traffic_signals
123 bridge: highway=bridge
126 cattle grid: highway=cattle_grid
132 lock gate: waterway=lock_gate
134 aqueduct: waterway=aqueduct
135 winding hole: waterway=turning_point
136 mooring: waterway=mooring
139 station: railway=station
140 viaduct: railway=viaduct
141 level crossing: railway=crossing
144 StringIO.open(txt) do |file|
145 file.each_line {|line|
147 if (t=~/(\w+)\/(\w+)/) then
150 presetmenus[presettype].push(presetcategory)
151 presetnames[presettype][presetcategory]=["(no preset)"]
152 elsif (t=~/^(.+):\s?(.+)$/) then
154 presetnames[presettype][presetcategory].push(pre)
156 kv.split(',').each {|a|
157 if (a=~/^(.+)=(.*)$/) then presets[pre][$1]=$2 end
162 return [presets,presetmenus,presetnames]
165 # ----- whichways(left,bottom,right,top)
166 # return array of ways in current bounding box
167 # at present, instead of using correct (=more complex) SQL to find
168 # corner-crossing ways, it simply enlarges the bounding box by +/- 0.01
171 waylist=WaySegment.find_by_sql("SELECT DISTINCT current_way_segments.id AS wayid"+
172 " FROM current_way_segments,current_segments,current_nodes,current_ways "+
173 " WHERE segment_id=current_segments.id "+
174 " AND current_segments.visible=1 "+
175 " AND node_a=current_nodes.id "+
176 " AND current_ways.id=current_way_segments.id "+
177 " AND current_ways.visible=1 "+
178 " AND (latitude BETWEEN "+(args[1].to_f-0.01).to_s+" AND "+(args[3].to_f+0.01).to_s+") "+
179 " AND (longitude BETWEEN "+(args[0].to_f-0.01).to_s+" AND "+(args[2].to_f+0.01).to_s+")")
181 ways = waylist.collect {|a| a.wayid.to_i } # get an array of way id's
183 pointlist =ActiveRecord::Base.connection.select_all("SELECT current_nodes.id,current_nodes.tags "+
184 " FROM current_nodes "+
185 " LEFT OUTER JOIN current_segments cs1 ON cs1.node_a=current_nodes.id "+
186 " LEFT OUTER JOIN current_segments cs2 ON cs2.node_b=current_nodes.id "+
187 " WHERE (latitude BETWEEN "+(args[1].to_f-0.01).to_s+" AND "+(args[3].to_f+0.01).to_s+") "+
188 " AND (longitude BETWEEN "+(args[0].to_f-0.01).to_s+" AND "+(args[2].to_f-0.01).to_s+") "+
189 " AND cs1.id IS NULL AND cs2.id IS NULL "+
190 " AND current_nodes.visible=1")
192 points = pointlist.collect {|a| [a['id'],tag2array(a['tags'])] } # get a list of node ids and their tags
197 # ----- getway (objectname, way, baselong, basey, masterscale)
198 # returns objectname, array of co-ordinates, attributes,
199 # xmin,xmax,ymin,ymax
202 objname,wayid,baselong,basey,masterscale=args
207 xmax = ymax = -999999
209 readwayquery(wayid).each {|row|
210 xs1=long2coord(row['long1'].to_f,baselong,masterscale); ys1=lat2coord(row['lat1'].to_f,basey,masterscale)
211 xs2=long2coord(row['long2'].to_f,baselong,masterscale); ys2=lat2coord(row['lat2'].to_f,basey,masterscale)
212 points << [xs1,ys1,row['id1'].to_i,0,tag2array(row['tags1']),0] if (row['id1'].to_i!=lastid)
213 lastid = row['id2'].to_i
214 points << [xs2,ys2,row['id2'].to_i,1,tag2array(row['tags2']),row['segment_id'].to_i]
215 xmin = [xmin,row['long1'].to_f,row['long2'].to_f].min
216 xmax = [xmax,row['long1'].to_f,row['long2'].to_f].max
217 ymin = [ymin,row['lat1'].to_f,row['lat2'].to_f].min
218 ymax = [ymax,row['lat1'].to_f,row['lat2'].to_f].max
222 attrlist=ActiveRecord::Base.connection.select_all "SELECT k,v FROM current_way_tags WHERE id=#{wayid}"
223 attrlist.each {|a| attributes[a['k']]=a['v'] }
225 [objname,points,attributes,xmin,xmax,ymin,ymax]
228 # ----- putway (user token, way, array of co-ordinates, array of attributes,
229 # baselong, basey, masterscale)
230 # returns current way ID, new way ID, hash of renumbered nodes,
231 # xmin,xmax,ymin,ymax
234 usertoken,originalway,points,attributes,baselong,basey,masterscale=args
235 uid=getuserid(usertoken)
237 db_uqs='uniq'+uid.to_s+originalway.to_i.abs.to_s+Time.new.to_i.to_s # temp uniquesegments table name, typically 51 chars
238 db_uqn='unin'+uid.to_s+originalway.to_i.abs.to_s+Time.new.to_i.to_s # temp uniquenodes table name, typically 51 chars
239 db_now='@now'+uid.to_s+originalway.to_i.abs.to_s+Time.new.to_i.to_s # 'now' variable name, typically 51 chars
240 ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()")
241 originalway=originalway.to_i
243 # -- 3. read original way into memory
245 xc={}; yc={}; tagc={}; seg={}
248 readwayquery(way).each { |row|
249 id1=row['id1'].to_i; xc[id1]=row['long1'].to_f; yc[id1]=row['lat1'].to_f; tagc[id1]=row['tags1']
250 id2=row['id2'].to_i; xc[id2]=row['long2'].to_f; yc[id2]=row['lat2'].to_f; tagc[id2]=row['tags2']
251 seg[row['segment_id'].to_i]=id1.to_s+'-'+id2.to_s
253 ActiveRecord::Base.connection.update("UPDATE current_ways SET timestamp=#{db_now},user_id=#{uid},visible=1 WHERE id=#{way}")
255 way=ActiveRecord::Base.connection.insert("INSERT INTO current_ways (user_id,timestamp,visible) VALUES (#{uid},#{db_now},1)")
258 # -- 4. get version by inserting new row into ways
260 version=ActiveRecord::Base.connection.insert("INSERT INTO ways (id,user_id,timestamp,visible) VALUES (#{way},#{uid},#{db_now},1)")
262 # -- 5. compare nodes and update xmin,xmax,ymin,ymax
265 xmax = ymax = -999999
266 insertsql = nodelist = ''
269 points.each_index do |i|
270 xs=coord2long(points[i][0],masterscale,baselong)
271 ys=coord2lat(points[i][1],masterscale,basey)
272 xmin=[xs,xmin].min; xmax=[xs,xmax].max
273 ymin=[ys,ymin].min; ymax=[ys,ymax].max
274 node=points[i][2].to_i
275 tagstr=array2tag(points[i][4])
276 tagsql="'"+sqlescape(tagstr)+"'"
281 newnode=ActiveRecord::Base.connection.insert("INSERT INTO current_nodes ( latitude,longitude,timestamp,user_id,visible,tags) VALUES ( #{ys},#{xs},#{db_now},#{uid},1,#{tagsql})")
282 ActiveRecord::Base.connection.insert("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags) VALUES (#{newnode},#{ys},#{xs},#{db_now},#{uid},1,#{tagsql})")
284 renumberednodes[node.to_s]=newnode.to_s
286 elsif xc.has_key?(node)
287 # old node from original way - update
288 if (xs!=xc[node] or (ys/0.0000001).round!=(yc[node]/0.0000001).round or tagstr!=tagc[node])
289 ActiveRecord::Base.connection.insert("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags) VALUES (#{node},#{ys},#{xs},#{db_now},#{uid},1,#{tagsql})")
290 ActiveRecord::Base.connection.update("UPDATE current_nodes SET latitude=#{ys},longitude=#{xs},timestamp=#{db_now},user_id=#{uid},tags=#{tagsql},visible=1 WHERE id=#{node}")
292 if (nodelist!='') then nodelist+=',' end; nodelist+=node.to_s
295 # old node, created in another way and now added to this way
296 if (nodelist!='') then nodelist+=',' end; nodelist+=node.to_s
302 ActiveRecord::Base.connection.update("UPDATE current_nodes SET timestamp=#{db_now},user_id=#{uid},visible=1 WHERE id IN (#{nodelist})")
305 # -- 6.i compare segments
309 for i in (0..(points.length-2))
310 if (points[i+1][3].to_i==0) then next end
311 segid=points[i+1][5].to_i
312 from =points[i ][2].to_i
313 to =points[i+1][2].to_i
314 if seg.has_key?(segid)
315 if seg[segid]=="#{from}-#{to}" then
316 if (seglist!='') then seglist+=',' end; seglist+=segid.to_s
320 segid=ActiveRecord::Base.connection.insert("INSERT INTO current_segments ( node_a,node_b,timestamp,user_id,visible,tags) VALUES ( #{from},#{to},#{db_now},#{uid},1,'')")
321 ActiveRecord::Base.connection.insert("INSERT INTO segments (id,node_a,node_b,timestamp,user_id,visible,tags) VALUES (#{segid},#{from},#{to},#{db_now},#{uid},1,'')")
323 numberedsegments[(i+1).to_s]=segid.to_s
325 # numberedsegments.each{|a,b| RAILS_DEFAULT_LOGGER.error("Sending back: seg no. #{a} -> id #{b}") }
328 ActiveRecord::Base.connection.update("UPDATE current_segments SET timestamp=#{db_now},user_id=#{uid},visible=1 WHERE id IN (#{seglist})")
332 # -- 6.ii insert new way segments
334 createuniquesegments(way,db_uqs)
336 # delete segments from uniquesegments (and not in modified way)
339 INSERT INTO segments (id,node_a,node_b,timestamp,user_id,visible)
340 SELECT DISTINCT segment_id,node_a,node_b,#{db_now},#{uid},0
341 FROM current_segments AS cs, #{db_uqs} AS us
342 WHERE cs.id=us.segment_id AND cs.visible=1
343 AND (cs.timestamp!=#{db_now} OR cs.user_id!=#{uid})
345 ActiveRecord::Base.connection.insert(sql)
348 UPDATE current_segments AS cs, #{db_uqs} AS us
349 SET cs.timestamp=#{db_now},cs.visible=0,cs.user_id=#{uid}
350 WHERE cs.id=us.segment_id AND cs.visible=1
351 AND (cs.timestamp!=#{db_now} OR cs.user_id!=#{uid})
353 ActiveRecord::Base.connection.update(sql)
355 # delete nodes not in modified way or any other segments
357 createuniquenodes(db_uqs,db_uqn)
360 INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible)
361 SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0
362 FROM current_nodes AS cn,#{db_uqn}
365 ActiveRecord::Base.connection.insert(sql)
368 UPDATE current_nodes AS cn, #{db_uqn}
369 SET cn.timestamp=#{db_now},cn.visible=0,cn.user_id=#{uid}
372 ActiveRecord::Base.connection.update(sql)
374 ActiveRecord::Base.connection.execute("DROP TABLE #{db_uqs}")
375 ActiveRecord::Base.connection.execute("DROP TABLE #{db_uqn}")
377 # insert new version of route into way_segments
382 for i in (0..(points.length-2))
383 if (points[i+1][3].to_i==0) then next end
384 if insertsql !='' then insertsql +=',' end
385 if currentsql!='' then currentsql+=',' end
386 insertsql +="(#{way},#{points[i+1][5]},#{version})"
387 currentsql+="(#{way},#{points[i+1][5]},#{sequence})"
391 ActiveRecord::Base.connection.execute("DELETE FROM current_way_segments WHERE id=#{way}");
392 ActiveRecord::Base.connection.insert("INSERT INTO way_segments (id,segment_id,version ) VALUES #{insertsql}");
393 ActiveRecord::Base.connection.insert("INSERT INTO current_way_segments (id,segment_id,sequence_id) VALUES #{currentsql}");
395 # -- 7. insert new way tags
399 attributes.each do |k,v|
400 if v=='' then next end
401 if v[0,6]=='(type ' then next end
402 if insertsql !='' then insertsql +=',' end
403 if currentsql!='' then currentsql+=',' end
404 insertsql +="(#{way},'"+sqlescape(k)+"','"+sqlescape(v)+"',version)"
405 currentsql+="(#{way},'"+sqlescape(k)+"','"+sqlescape(v)+"')"
408 ActiveRecord::Base.connection.execute("DELETE FROM current_way_tags WHERE id=#{way}")
409 if (insertsql !='') then ActiveRecord::Base.connection.insert("INSERT INTO way_tags (id,k,v,version) VALUES #{insertsql}" ) end
410 if (currentsql!='') then ActiveRecord::Base.connection.insert("INSERT INTO current_way_tags (id,k,v) VALUES #{currentsql}") end
412 [originalway,way,renumberednodes,numberedsegments,xmin,xmax,ymin,ymax]
415 # ----- deleteway (user token, way)
416 # returns way ID only
420 uid=getuserid(usertoken); if !uid then return end
423 db_uqs='uniq'+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # temp uniquesegments table name, typically 51 chars
424 db_uqn='unin'+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # temp uniquenodes table name, typically 51 chars
425 db_now='@now'+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # 'now' variable name, typically 51 chars
426 ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()")
427 createuniquesegments(way,db_uqs)
429 # - delete any otherwise unused segments
432 INSERT INTO segments (id,node_a,node_b,timestamp,user_id,visible)
433 SELECT DISTINCT segment_id,node_a,node_b,#{db_now},#{uid},0
434 FROM current_segments AS cs, #{db_uqs} AS us
435 WHERE cs.id=us.segment_id
437 ActiveRecord::Base.connection.insert(sql)
440 UPDATE current_segments AS cs, #{db_uqs} AS us
441 SET cs.timestamp=#{db_now},cs.visible=0,cs.user_id=#{uid}
442 WHERE cs.id=us.segment_id
444 ActiveRecord::Base.connection.update(sql)
446 # - delete any unused nodes
448 createuniquenodes(db_uqs,db_uqn)
451 INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible)
452 SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0
453 FROM current_nodes AS cn,#{db_uqn}
456 ActiveRecord::Base.connection.insert(sql)
459 UPDATE current_nodes AS cn, #{db_uqn}
460 SET cn.timestamp=#{db_now},cn.visible=0,cn.user_id=#{uid}
463 ActiveRecord::Base.connection.update(sql)
465 ActiveRecord::Base.connection.execute("DROP TABLE #{db_uqs}")
466 ActiveRecord::Base.connection.execute("DROP TABLE #{db_uqn}")
470 ActiveRecord::Base.connection.insert("INSERT INTO ways (id,user_id,timestamp,visible) VALUES (#{way},#{uid},#{db_now},0)")
471 ActiveRecord::Base.connection.update("UPDATE current_ways SET user_id=#{uid},timestamp=#{db_now},visible=0 WHERE id=#{way}")
472 ActiveRecord::Base.connection.execute("DELETE FROM current_way_segments WHERE id=#{way}")
473 ActiveRecord::Base.connection.execute("DELETE FROM current_way_tags WHERE id=#{way}")
478 # ====================================================================
479 # Support functions for remote calls
482 ActiveRecord::Base.connection.select_all "SELECT n1.latitude AS lat1,n1.longitude AS long1,n1.id AS id1,n1.tags as tags1, "+
483 " n2.latitude AS lat2,n2.longitude AS long2,n2.id AS id2,n2.tags as tags2,segment_id "+
484 " FROM current_way_segments,current_segments,current_nodes AS n1,current_nodes AS n2 "+
485 " WHERE current_way_segments.id=#{id} "+
486 " AND segment_id=current_segments.id "+
487 " AND n1.id=node_a and n2.id=node_b "+
488 " ORDER BY sequence_id"
491 def createuniquesegments(way,uqs_name)
492 # Finds segments which appear in this way and no other
494 CREATE TEMPORARY TABLE #{uqs_name}
496 FROM (SELECT DISTINCT segment_id FROM current_way_segments
498 LEFT JOIN current_way_segments b
499 ON b.segment_id = a.segment_id
501 WHERE b.segment_id IS NULL
503 ActiveRecord::Base.connection.execute(sql)
506 def createuniquenodes(uqs_name,uqn_name)
507 # Finds nodes which appear in uniquesegments but no other segments
509 CREATE TEMPORARY TABLE #{uqn_name}
510 SELECT DISTINCT node_id
511 FROM (SELECT cn.id AS node_id
512 FROM current_nodes AS cn,
513 current_segments AS cs,
515 WHERE cs.id=us.segment_id
516 AND (cn.id=cs.node_a OR cn.id=cs.node_b)) AS n
517 LEFT JOIN current_segments AS cs2 ON node_id=cs2.node_a AND cs2.visible=1
518 LEFT JOIN current_segments AS cs3 ON node_id=cs3.node_b AND cs3.visible=1
519 WHERE cs2.node_a IS NULL
520 AND cs3.node_b IS NULL
522 ActiveRecord::Base.connection.execute(sql)
526 a.gsub("'","''").gsub(92.chr,92.chr+92.chr)
531 a.gsub(';;;','#%').split(';').each do |b|
535 if k.nil? then k='' end
536 if v.nil? then v='' end
537 tags[k.gsub('#%','=')]=v.gsub('#%','=')
545 if v=='' then next end
546 if v[0,6]=='(type ' then next end
547 if str!='' then str+=';' end
548 str+=k.gsub(';',';;;').gsub('=','===')+'='+v.gsub(';',';;;').gsub('=','===')
554 token=sqlescape(token)
555 if (token=~/^(.+)\+(.+)$/) then
556 return ActiveRecord::Base.connection.select_value("SELECT id FROM users WHERE active=1 AND timeout>NOW() AND email='#{$1}' AND pass_crypt=MD5('#{$2}')")
558 return ActiveRecord::Base.connection.select_value("SELECT id FROM users WHERE active=1 AND timeout>NOW() AND token='#{token}'")
564 # ====================================================================
565 # AMF read subroutines
567 # ----- getint return two-byte integer
568 # ----- getlong return four-byte long
569 # ----- getstring return string with two-byte length
570 # ----- getdouble return eight-byte double-precision float
571 # ----- getobject return object/hash
572 # ----- getarray return numeric array
579 ((s.getc*256+s.getc)*256+s.getc)*256+s.getc
583 len=s.getc*256+s.getc
588 a=s.read(8).unpack('G') # G big-endian, E little-endian
603 while (key=getstring(s))
604 if (key=='') then break end
607 s.getc # skip the 9 'end of object' value
611 # ----- getvalue parse and get value
615 when 0; return getdouble(s) # number
616 when 1; return s.getc # boolean
617 when 2; return getstring(s) # string
618 when 3; return getobject(s) # object/hash
619 when 5; return nil # null
620 when 6; return nil # undefined
621 when 8; s.read(4) # mixedArray
622 return getobject(s) # |
623 when 10;return getarray(s) # array
624 else; return nil # error
628 # ====================================================================
629 # AMF write subroutines
631 # ----- putdata envelope data into AMF writeable form
632 # ----- encodevalue pack variables as AMF
635 d =encodestring(index+"/onResult")
636 d+=encodestring("null")
644 a=10.chr+encodelong(n.length)
652 a+=encodestring(k)+encodevalue(v)
656 2.chr+encodestring(n)
657 when 'Bignum','Fixnum','Float'
658 0.chr+encodedouble(n)
662 RAILS_DEFAULT_LOGGER.error("Unexpected Ruby type for AMF conversion: "+n.class.to_s)
666 # ----- encodestring encode string with two-byte length
667 # ----- encodedouble encode number as eight-byte double precision float
668 # ----- encodelong encode number as four-byte long
671 a,b=n.size.divmod(256)
683 # ====================================================================
684 # Co-ordinate conversion
686 def lat2coord(a,basey,masterscale)
687 -(lat2y(a)-basey)*masterscale+250
690 def long2coord(a,baselong,masterscale)
691 (a-baselong)*masterscale+350
695 180/Math::PI * Math.log(Math.tan(Math::PI/4+a*(Math::PI/180)/2))
698 def coord2lat(a,masterscale,basey)
699 y2lat((a-250)/-masterscale+basey)
702 def coord2long(a,masterscale,baselong)
703 (a-350)/masterscale+baselong
707 180/Math::PI * (2*Math.atan(Math.exp(a*Math::PI/180))-Math::PI/2)