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_now='@now'+uid.to_s+originalway.to_i.abs.to_s+Time.new.to_i.to_s # 'now' variable name, typically 51 chars
239 ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()")
240 originalway=originalway.to_i
242 # -- 3. read original way into memory
244 xc={}; yc={}; tagc={}; seg={}
247 readwayquery(way).each { |row|
248 id1=row['id1'].to_i; xc[id1]=row['long1'].to_f; yc[id1]=row['lat1'].to_f; tagc[id1]=row['tags1']
249 id2=row['id2'].to_i; xc[id2]=row['long2'].to_f; yc[id2]=row['lat2'].to_f; tagc[id2]=row['tags2']
250 seg[row['segment_id'].to_i]=id1.to_s+'-'+id2.to_s
252 ActiveRecord::Base.connection.update("UPDATE current_ways SET timestamp=#{db_now},user_id=#{uid},visible=1 WHERE id=#{way}")
254 way=ActiveRecord::Base.connection.insert("INSERT INTO current_ways (user_id,timestamp,visible) VALUES (#{uid},#{db_now},1)")
257 # -- 4. get version by inserting new row into ways
259 version=ActiveRecord::Base.connection.insert("INSERT INTO ways (id,user_id,timestamp,visible) VALUES (#{way},#{uid},#{db_now},1)")
261 # -- 5. compare nodes and update xmin,xmax,ymin,ymax
264 xmax = ymax = -999999
265 insertsql = nodelist = ''
268 points.each_index do |i|
269 xs=coord2long(points[i][0],masterscale,baselong)
270 ys=coord2lat(points[i][1],masterscale,basey)
271 xmin=[xs,xmin].min; xmax=[xs,xmax].max
272 ymin=[ys,ymin].min; ymax=[ys,ymax].max
273 node=points[i][2].to_i
274 tagstr=array2tag(points[i][4])
275 tagsql="'"+sqlescape(tagstr)+"'"
280 newnode=ActiveRecord::Base.connection.insert("INSERT INTO current_nodes ( latitude,longitude,timestamp,user_id,visible,tags) VALUES ( #{ys},#{xs},#{db_now},#{uid},1,#{tagsql})")
281 ActiveRecord::Base.connection.insert("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags) VALUES (#{newnode},#{ys},#{xs},#{db_now},#{uid},1,#{tagsql})")
283 renumberednodes[node.to_s]=newnode.to_s
285 elsif xc.has_key?(node)
286 # old node from original way - update
287 if (xs!=xc[node] or (ys/0.0000001).round!=(yc[node]/0.0000001).round or tagstr!=tagc[node])
288 ActiveRecord::Base.connection.insert("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags) VALUES (#{node},#{ys},#{xs},#{db_now},#{uid},1,#{tagsql})")
289 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}")
291 if (nodelist!='') then nodelist+=',' end; nodelist+=node.to_s
294 # old node, created in another way and now added to this way
295 if (nodelist!='') then nodelist+=',' end; nodelist+=node.to_s
301 ActiveRecord::Base.connection.update("UPDATE current_nodes SET timestamp=#{db_now},user_id=#{uid},visible=1 WHERE id IN (#{nodelist})")
304 # -- 6.i compare segments
308 for i in (0..(points.length-2))
309 if (points[i+1][3].to_i==0) then next end
310 segid=points[i+1][5].to_i
311 from =points[i ][2].to_i
312 to =points[i+1][2].to_i
313 if seg.has_key?(segid)
314 if seg[segid]=="#{from}-#{to}" then
315 if (seglist!='') then seglist+=',' end; seglist+=segid.to_s
319 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,'')")
320 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,'')")
322 numberedsegments[(i+1).to_s]=segid.to_s
324 # numberedsegments.each{|a,b| RAILS_DEFAULT_LOGGER.error("Sending back: seg no. #{a} -> id #{b}") }
327 ActiveRecord::Base.connection.update("UPDATE current_segments SET timestamp=#{db_now},user_id=#{uid},visible=1 WHERE id IN (#{seglist})")
331 # -- 6.ii insert new way segments
333 createuniquesegments(way,db_uqs)
336 # ActiveRecord::Base.connection.select_values("SELECT segment_id FROM #{db_uqs}").each {|b| a+=b+',' }
337 # RAILS_DEFAULT_LOGGER.error("Unique segments are #{a}")
338 # a=ActiveRecord::Base.connection.select_value("SELECT #{db_now}")
339 # RAILS_DEFAULT_LOGGER.error("Timestamp of this edit is #{a}")
340 # RAILS_DEFAULT_LOGGER.error("Userid of this edit is #{uid}")
342 # delete nodes from uniquesegments (and not in modified way)
345 INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible)
346 SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0
347 FROM current_nodes AS cn,
348 current_segments AS cs,
350 WHERE(cn.id=cs.node_a OR cn.id=cs.node_b)
351 AND cs.id=us.segment_id AND cs.visible=1
352 AND (cn.timestamp!=#{db_now} OR cn.user_id!=#{uid})
354 ActiveRecord::Base.connection.insert(sql)
357 UPDATE current_nodes AS cn,
358 current_segments AS cs,
360 SET cn.timestamp=#{db_now},cn.visible=0,cn.user_id=#{uid}
361 WHERE (cn.id=cs.node_a OR cn.id=cs.node_b)
362 AND cs.id=us.segment_id AND cs.visible=1
363 AND (cn.timestamp!=#{db_now} OR cn.user_id!=#{uid})
365 ActiveRecord::Base.connection.update(sql)
367 # delete segments from uniquesegments (and not in modified way)
370 INSERT INTO segments (id,node_a,node_b,timestamp,user_id,visible)
371 SELECT DISTINCT segment_id,node_a,node_b,#{db_now},#{uid},0
372 FROM current_segments AS cs, #{db_uqs} AS us
373 WHERE cs.id=us.segment_id AND cs.visible=1
374 AND (cs.timestamp!=#{db_now} OR cs.user_id!=#{uid})
376 ActiveRecord::Base.connection.insert(sql)
379 UPDATE current_segments AS cs, #{db_uqs} AS us
380 SET cs.timestamp=#{db_now},cs.visible=0,cs.user_id=#{uid}
381 WHERE cs.id=us.segment_id AND cs.visible=1
382 AND (cs.timestamp!=#{db_now} OR cs.user_id!=#{uid})
384 ActiveRecord::Base.connection.update(sql)
385 ActiveRecord::Base.connection.execute("DROP TABLE #{db_uqs}")
387 # insert new version of route into way_segments
392 for i in (0..(points.length-2))
393 if (points[i+1][3].to_i==0) then next end
394 if insertsql !='' then insertsql +=',' end
395 if currentsql!='' then currentsql+=',' end
396 insertsql +="(#{way},#{points[i+1][5]},#{version})"
397 currentsql+="(#{way},#{points[i+1][5]},#{sequence})"
401 ActiveRecord::Base.connection.execute("DELETE FROM current_way_segments WHERE id=#{way}");
402 ActiveRecord::Base.connection.insert("INSERT INTO way_segments (id,segment_id,version ) VALUES #{insertsql}");
403 ActiveRecord::Base.connection.insert("INSERT INTO current_way_segments (id,segment_id,sequence_id) VALUES #{currentsql}");
405 # -- 7. insert new way tags
409 attributes.each do |k,v|
410 if v=='' then next end
411 if v[0,6]=='(type ' then next end
412 if insertsql !='' then insertsql +=',' end
413 if currentsql!='' then currentsql+=',' end
414 insertsql +="(#{way},'"+sqlescape(k)+"','"+sqlescape(v)+"',version)"
415 currentsql+="(#{way},'"+sqlescape(k)+"','"+sqlescape(v)+"')"
418 ActiveRecord::Base.connection.execute("DELETE FROM current_way_tags WHERE id=#{way}")
419 if (insertsql !='') then ActiveRecord::Base.connection.insert("INSERT INTO way_tags (id,k,v,version) VALUES #{insertsql}" ) end
420 if (currentsql!='') then ActiveRecord::Base.connection.insert("INSERT INTO current_way_tags (id,k,v) VALUES #{currentsql}") end
422 [originalway,way,renumberednodes,numberedsegments,xmin,xmax,ymin,ymax]
425 # ----- deleteway (user token, way)
426 # returns way ID only
430 uid=getuserid(usertoken); if !uid then return end
433 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
434 db_now='@now'+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # 'now' variable name, typically 51 chars
435 ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()")
436 createuniquesegments(way,db_uqs)
439 INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible)
440 SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0
441 FROM current_nodes AS cn,
442 current_segments AS cs,
444 WHERE (cn.id=cs.node_a OR cn.id=cs.node_b)
445 AND cs.id=us.segment_id
447 ActiveRecord::Base.connection.insert(sql)
450 UPDATE current_nodes AS cn,
451 current_segments AS cs,
453 SET cn.timestamp=#{db_now},cn.visible=0,cn.user_id=#{uid}
454 WHERE (cn.id=cs.node_a OR cn.id=cs.node_b)
455 AND cs.id=us.segment_id
457 ActiveRecord::Base.connection.update(sql)
459 # - delete any otherwise unused segments
462 INSERT INTO segments (id,node_a,node_b,timestamp,user_id,visible)
463 SELECT DISTINCT segment_id,node_a,node_b,#{db_now},#{uid},0
464 FROM current_segments AS cs, #{db_uqs} AS us
465 WHERE cs.id=us.segment_id
467 ActiveRecord::Base.connection.insert(sql)
470 UPDATE current_segments AS cs, #{db_uqs} AS us
471 SET cs.timestamp=#{db_now},cs.visible=0,cs.user_id=#{uid}
472 WHERE cs.id=us.segment_id
474 ActiveRecord::Base.connection.update(sql)
475 ActiveRecord::Base.connection.execute("DROP TABLE #{db_uqs}")
479 ActiveRecord::Base.connection.insert("INSERT INTO ways (id,user_id,timestamp,visible) VALUES (#{way},#{uid},#{db_now},0)")
480 ActiveRecord::Base.connection.update("UPDATE current_ways SET user_id=#{uid},timestamp=#{db_now},visible=0 WHERE id=#{way}")
481 ActiveRecord::Base.connection.execute("DELETE FROM current_way_segments WHERE id=#{way}")
482 ActiveRecord::Base.connection.execute("DELETE FROM current_way_tags WHERE id=#{way}")
487 # ====================================================================
488 # Support functions for remote calls
491 ActiveRecord::Base.connection.select_all "SELECT n1.latitude AS lat1,n1.longitude AS long1,n1.id AS id1,n1.tags as tags1, "+
492 " n2.latitude AS lat2,n2.longitude AS long2,n2.id AS id2,n2.tags as tags2,segment_id "+
493 " FROM current_way_segments,current_segments,current_nodes AS n1,current_nodes AS n2 "+
494 " WHERE current_way_segments.id=#{id} "+
495 " AND segment_id=current_segments.id "+
496 " AND n1.id=node_a and n2.id=node_b "+
497 " ORDER BY sequence_id"
500 def createuniquesegments(way,uqs_name)
502 CREATE TEMPORARY TABLE #{uqs_name}
504 FROM (SELECT DISTINCT segment_id FROM current_way_segments
506 LEFT JOIN current_way_segments b
507 ON b.segment_id = a.segment_id
509 WHERE b.segment_id IS NULL
511 ActiveRecord::Base.connection.execute(sql)
516 a.gsub("'","''").gsub(92.chr,92.chr+92.chr)
521 a.gsub(';;;','#%').split(';').each do |b|
525 if k.nil? then k='' end
526 if v.nil? then v='' end
527 tags[k.gsub('#%','=')]=v.gsub('#%','=')
535 if v=='' then next end
536 if v[0,6]=='(type ' then next end
537 if str!='' then str+=';' end
538 str+=k.gsub(';',';;;').gsub('=','===')+'='+v.gsub(';',';;;').gsub('=','===')
544 token=sqlescape(token)
545 if (token=~/^(.+)\+(.+)$/) then
546 return ActiveRecord::Base.connection.select_value("SELECT id FROM users WHERE active=1 AND timeout>NOW() AND email='#{$1}' AND pass_crypt=MD5('#{$2}')")
548 return ActiveRecord::Base.connection.select_value("SELECT id FROM users WHERE active=1 AND timeout>NOW() AND token='#{token}'")
554 # ====================================================================
555 # AMF read subroutines
557 # ----- getint return two-byte integer
558 # ----- getlong return four-byte long
559 # ----- getstring return string with two-byte length
560 # ----- getdouble return eight-byte double-precision float
561 # ----- getobject return object/hash
562 # ----- getarray return numeric array
569 ((s.getc*256+s.getc)*256+s.getc)*256+s.getc
573 len=s.getc*256+s.getc
578 a=s.read(8).unpack('G') # G big-endian, E little-endian
593 while (key=getstring(s))
594 if (key=='') then break end
597 s.getc # skip the 9 'end of object' value
601 # ----- getvalue parse and get value
605 when 0; return getdouble(s) # number
606 when 1; return s.getc # boolean
607 when 2; return getstring(s) # string
608 when 3; return getobject(s) # object/hash
609 when 5; return nil # null
610 when 6; return nil # undefined
611 when 8; s.read(4) # mixedArray
612 return getobject(s) # |
613 when 10;return getarray(s) # array
614 else; return nil # error
618 # ====================================================================
619 # AMF write subroutines
621 # ----- putdata envelope data into AMF writeable form
622 # ----- encodevalue pack variables as AMF
625 d =encodestring(index+"/onResult")
626 d+=encodestring("null")
634 a=10.chr+encodelong(n.length)
642 a+=encodestring(k)+encodevalue(v)
646 2.chr+encodestring(n)
647 when 'Bignum','Fixnum','Float'
648 0.chr+encodedouble(n)
652 RAILS_DEFAULT_LOGGER.error("Unexpected Ruby type for AMF conversion: "+n.class.to_s)
656 # ----- encodestring encode string with two-byte length
657 # ----- encodedouble encode number as eight-byte double precision float
658 # ----- encodelong encode number as four-byte long
661 a,b=n.size.divmod(256)
673 # ====================================================================
674 # Co-ordinate conversion
676 def lat2coord(a,basey,masterscale)
677 -(lat2y(a)-basey)*masterscale+250
680 def long2coord(a,baselong,masterscale)
681 (a-baselong)*masterscale+350
685 180/Math::PI * Math.log(Math.tan(Math::PI/4+a*(Math::PI/180)/2))
688 def coord2lat(a,masterscale,basey)
689 y2lat((a-250)/-masterscale+basey)
692 def coord2long(a,masterscale,baselong)
693 (a-350)/masterscale+baselong
697 180/Math::PI * (2*Math.atan(Math.exp(a*Math::PI/180))-Math::PI/2)