Software /
code /
prosody
File
net/http.lua @ 652:aae898634301
Added tag 0.20, -m, Fix incorrect version number as tag for changeset 90da4c9b34b5
author | Matthew Wild <mwild1@gmail.com> |
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date | Sat, 27 Dec 2008 15:58:43 +0000 |
parent | 646:90da4c9b34b5 |
child | 677:93e5309c5430 |
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local socket = require "socket" local mime = require "mime" local url = require "socket.url" local server = require "net.server" local connlisteners_get = require "net.connlisteners".get; local listener = connlisteners_get("httpclient") or error("No httpclient listener!"); local t_insert, t_concat = table.insert, table.concat; local tonumber, tostring, pairs = tonumber, tostring, pairs; local print = function () end local urlcodes = setmetatable({}, { __index = function (t, k) t[k] = char(tonumber("0x"..k)); return t[k]; end }); local urlencode = function (s) return s and (s:gsub("%W", function (c) return string.format("%%%02x", c:byte()); end)); end module "http" local function expectbody(reqt, code) if reqt.method == "HEAD" then return nil end if code == 204 or code == 304 then return nil end if code >= 100 and code < 200 then return nil end return 1 end local function request_reader(request, data, startpos) if not data then if request.body then request.callback(t_concat(request.body), request.code, request); else -- Error.. connection was closed prematurely request.callback("connection-closed", 0, request); end destroy_request(request); return; end if request.state == "body" then print("Reading body...") if not request.body then request.body = {}; request.havebodylength, request.bodylength = 0, tonumber(request.responseheaders["content-length"]); end if startpos then data = data:sub(startpos, -1) end t_insert(request.body, data); if request.bodylength then request.havebodylength = request.havebodylength + #data; if request.havebodylength >= request.bodylength then -- We have the body if request.callback then request.callback(t_concat(request.body), request.code, request); end end print("", "Have "..request.havebodylength.." bytes out of "..request.bodylength); end elseif request.state == "headers" then print("Reading headers...") local pos = startpos; local headers = request.responseheaders or {}; for line in data:sub(startpos, -1):gmatch("(.-)\r\n") do startpos = startpos + #line + 2; local k, v = line:match("(%S+): (.+)"); if k and v then headers[k:lower()] = v; print("Header: "..k:lower().." = "..v); elseif #line == 0 then request.responseheaders = headers; break; else print("Unhandled header line: "..line); end end -- Reached the end of the headers request.state = "body"; if #data > startpos then return request_reader(request, data, startpos); end elseif request.state == "status" then print("Reading status...") local http, code, text, linelen = data:match("^HTTP/(%S+) (%d+) (.-)\r\n()", startpos); code = tonumber(code); if not code then return request.callback("invalid-status-line", 0, request); end request.code, request.responseversion = code, http; if request.onlystatus or not expectbody(request, code) then if request.callback then request.callback(nil, code, request); end destroy_request(request); return; end request.state = "headers"; if #data > linelen then return request_reader(request, data, linelen); end end end function request(u, ex, callback) local req = url.parse(u); local custom_headers, body; local default_headers = { ["Host"] = req.host, ["User-Agent"] = "Prosody XMPP Server" } if req.userinfo then default_headers["Authorization"] = "Basic "..mime.b64(req.userinfo); end if ex then custom_headers = ex.custom_headers; req.onlystatus = ex.onlystatus; body = ex.body; if body then req.method = "POST "; default_headers["Content-Length"] = tostring(#body); default_headers["Content-Type"] = "application/x-www-form-urlencoded"; end if ex.method then req.method = ex.method; end end req.handler, req.conn = server.wraptcpclient(listener, socket.tcp(), req.host, req.port or 80, 0, "*a"); req.write = req.handler.write; req.conn:settimeout(0); local ok, err = req.conn:connect(req.host, req.port or 80); if not ok and err ~= "timeout" then return nil, err; end req.write((req.method or "GET ")..req.path.." HTTP/1.0\r\n"); local t = { [2] = ": ", [4] = "\r\n" }; if custom_headers then for k, v in pairs(custom_headers) do t[1], t[3] = k, v; req.write(t_concat(t)); default_headers[k] = nil; end end for k, v in pairs(default_headers) do t[1], t[3] = k, v; req.write(t_concat(t)); default_headers[k] = nil; end req.write("\r\n"); if body then req.write(body); end req.callback = callback; req.reader = request_reader; req.state = "status" listener.register_request(req.handler, req); return req; end function destroy_request(request) if request.conn then request.handler.close() listener.disconnect(request.conn, "closed"); end end _M.urlencode = urlencode; return _M;