libs/sgi-uhttpd/luasrc/sgi/uhttpd.lua

   1 --[[
   2 LuCI - Server Gateway Interface for the uHTTPd server
   3
   4 Copyright 2010 Jo-Philipp Wich <xm@subsignal.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 Unless required by applicable law or agreed to in writing, software
  13 distributed under the License is distributed on an "AS IS" BASIS,
  14 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15 See the License for the specific language governing permissions and
  16 limitations under the License.
  17
  18 ]]--
  19
  20 require "nixio.util"
  21 require "luci.http"
  22 require "luci.sys"
  23 require "luci.dispatcher"
  24 require "luci.ltn12"
  25
  26 function handle_request(env)
  27         exectime = os.clock()
  28         local renv = {
  29                 CONTENT_LENGTH  = env.CONTENT_LENGTH,
  30                 CONTENT_TYPE    = env.CONTENT_TYPE,
  31                 REQUEST_METHOD  = env.REQUEST_METHOD,
  32                 REQUEST_URI     = env.REQUEST_URI,
  33                 PATH_INFO       = env.PATH_INFO,
  34                 SCRIPT_NAME     = env.SCRIPT_NAME:gsub("/+$", ""),
  35                 SCRIPT_FILENAME = env.SCRIPT_NAME,
  36                 SERVER_PROTOCOL = env.SERVER_PROTOCOL,
  37                 QUERY_STRING    = env.QUERY_STRING
  38         }
  39
  40         local k, v
  41         for k, v in pairs(env.headers) do
  42                 k = k:upper():gsub("%-", "_")
  43                 renv["HTTP_" .. k] = v
  44         end
  45
  46         local len = tonumber(env.CONTENT_LENGTH) or 0
  47         local function recv()
  48                 if len > 0 then
  49                         local rlen, rbuf = uhttpd.recv(4096)
  50                         if rlen >= 0 then
  51                                 len = len - rlen
  52                                 return rbuf
  53                         end
  54                 end
  55                 return nil
  56         end
  57
  58         local send = uhttpd.send
  59
  60         local req = luci.http.Request(
  61                 renv, recv, luci.ltn12.sink.file(io.stderr)
  62         )
  63
  64
  65         local x = coroutine.create(luci.dispatcher.httpdispatch)
  66         local hcache = { }
  67         local active = true
  68
  69         while coroutine.status(x) ~= "dead" do
  70                 local res, id, data1, data2 = coroutine.resume(x, req)
  71
  72                 if not res then
  73                         send("Status: 500 Internal Server Error\r\n")
  74                         send("Content-Type: text/plain\r\n\r\n")
  75                         send(tostring(id))
  76                         break
  77                 end
  78
  79                 if active then
  80                         if id == 1 then
  81                                 send("Status: ")
  82                                 send(tostring(data1))
  83                                 send(" ")
  84                                 send(tostring(data2))
  85                                 send("\r\n")
  86                         elseif id == 2 then
  87                                 hcache[data1] = data2
  88                         elseif id == 3 then
  89                                 for k, v in pairs(hcache) do
  90                                         send(tostring(k))
  91                                         send(": ")
  92                                         send(tostring(v))
  93                                         send("\r\n")
  94                                 end
  95                                 send("\r\n")
  96                         elseif id == 4 then
  97                                 send(tostring(data1 or ""))
  98                         elseif id == 5 then
  99                                 active = false
 100                         elseif id == 6 then
 101                                 data1:copyz(nixio.stdout, data2)
 102                         end
 103                 end
 104         end
 105 end