libs/httpd/luasrc/httpd/handler/luci.lua

   1 --[[
   2
   3 HTTP server implementation for LuCI - luci handler
   4 (c) 2008 Steven Barth <steven@midlink.org>
   5
   6 Licensed under the Apache License, Version 2.0 (the "License");
   7 you may not use this file except in compliance with the License.
   8 You may obtain a copy of the License at
   9
  10         http://www.apache.org/licenses/LICENSE-2.0
  11
  12 $Id$
  13
  14 ]]--
  15
  16 module("luci.httpd.handler.luci", package.seeall)
  17
  18 require("luci.dispatcher")
  19 require("luci.http")
  20 require("ltn12")
  21
  22 Luci = luci.util.class(luci.httpd.module.Handler)
  23 Response = luci.httpd.module.Response
  24
  25 function Luci.__init__(self)
  26         luci.httpd.module.Handler.__init__(self)
  27 end
  28
  29 function Luci.handle_head(self, ...)
  30         local response, sourceout = self:handle_get(...)
  31         return response
  32 end
  33
  34 function Luci.handle_post(self, ...)
  35         return self:handle_get(...)
  36 end
  37
  38 function Luci.handle_get(self, request, sourcein, sinkerr)
  39         local r = luci.http.Request(
  40                 request.env,
  41                 sourcein,
  42                 sinkerr
  43         )
  44
  45         local res, id, data1, data2 = true, 0, nil, nil
  46         local headers = {}
  47         local status = 200
  48
  49         local x = coroutine.create(luci.dispatcher.httpdispatch)
  50         while not id or id < 3 do
  51                 coroutine.yield()
  52
  53                 res, id, data1, data2 = coroutine.resume(x, r)
  54
  55                 if not res then
  56                         status = 500
  57                         headers["Content-Type"] = "text/plain"
  58                         local err = {id}
  59                         return Response( status, headers ), function() return table.remove(err) end
  60                 end
  61
  62                 if id == 1 then
  63                         status = data1
  64                 elseif id == 2 then
  65                         headers[data1] = data2
  66                 end
  67         end
  68
  69         local function iter()
  70                 local res, id, data = coroutine.resume(x)
  71                 if not res then
  72                         return nil, id
  73                 elseif not id then
  74                         return true
  75                 elseif id == 5 then
  76                         return nil
  77                 else
  78                         return data
  79                 end
  80         end
  81
  82         return Response(status, headers), iter
  83 end