2 local socket = require "socket"
3 local mime = require "mime"
4 local url = require "socket.url"
6 local server = require "net.server"
8 local connlisteners_get = require "net.connlisteners".get;
9 local listener = connlisteners_get("httpclient") or error("No httpclient listener!");
11 local t_insert, t_concat = table.insert, table.concat;
12 local tonumber, tostring, pairs = tonumber, tostring, pairs;
13 local print = function () end
15 local urlcodes = setmetatable({}, { __index = function (t, k) t[k] = char(tonumber("0x"..k)); return t[k]; end });
16 local urlencode = function (s) return s and (s:gsub("%W", function (c) return string.format("%%%02x", c:byte()); end)); end
20 local function expectbody(reqt, code)
21 if reqt.method == "HEAD" then return nil end
22 if code == 204 or code == 304 then return nil end
23 if code >= 100 and code < 200 then return nil end
27 local function request_reader(request, data, startpos)
30 request.callback(t_concat(request.body), request.code, request);
32 -- Error.. connection was closed prematurely
33 request.callback("connection-closed", 0, request);
35 destroy_request(request);
38 if request.state == "body" then
39 print("Reading body...")
40 if not request.body then request.body = {}; request.havebodylength, request.bodylength = 0, tonumber(request.responseheaders["content-length"]); end
42 data = data:sub(startpos, -1)
44 t_insert(request.body, data);
45 if request.bodylength then
46 request.havebodylength = request.havebodylength + #data;
47 if request.havebodylength >= request.bodylength then
49 if request.callback then
50 request.callback(t_concat(request.body), request.code, request);
53 print("", "Have "..request.havebodylength.." bytes out of "..request.bodylength);
55 elseif request.state == "headers" then
56 print("Reading headers...")
58 local headers = request.responseheaders or {};
59 for line in data:sub(startpos, -1):gmatch("(.-)\r\n") do
60 startpos = startpos + #line + 2;
61 local k, v = line:match("(%S+): (.+)");
63 headers[k:lower()] = v;
64 print("Header: "..k:lower().." = "..v);
65 elseif #line == 0 then
66 request.responseheaders = headers;
69 print("Unhandled header line: "..line);
72 -- Reached the end of the headers
73 request.state = "body";
74 if #data > startpos then
75 return request_reader(request, data, startpos);
77 elseif request.state == "status" then
78 print("Reading status...")
79 local http, code, text, linelen = data:match("^HTTP/(%S+) (%d+) (.-)\r\n()", startpos);
80 code = tonumber(code);
82 return request.callback("invalid-status-line", 0, request);
85 request.code, request.responseversion = code, http;
87 if request.onlystatus or not expectbody(request, code) then
88 if request.callback then
89 request.callback(nil, code, request);
91 destroy_request(request);
95 request.state = "headers";
97 if #data > linelen then
98 return request_reader(request, data, linelen);
103 function request(u, ex, callback)
104 local req = url.parse(u);
106 local custom_headers, body;
107 local default_headers = { ["Host"] = req.host, ["User-Agent"] = "Prosody XMPP Server" }
111 default_headers["Authorization"] = "Basic "..mime.b64(req.userinfo);
115 custom_headers = ex.custom_headers;
116 req.onlystatus = ex.onlystatus;
119 req.method = "POST ";
120 default_headers["Content-Length"] = tostring(#body);
121 default_headers["Content-Type"] = "application/x-www-form-urlencoded";
123 if ex.method then req.method = ex.method; end
126 req.handler, req.conn = server.wraptcpclient(listener, socket.tcp(), req.host, req.port or 80, 0, "*a");
127 req.write = req.handler.write;
128 req.conn:settimeout(0);
129 local ok, err = req.conn:connect(req.host, req.port or 80);
130 if not ok and err ~= "timeout" then
134 req.write((req.method or "GET ")..req.path.." HTTP/1.0\r\n");
135 local t = { [2] = ": ", [4] = "\r\n" };
136 if custom_headers then
137 for k, v in pairs(custom_headers) do
139 req.write(t_concat(t));
140 default_headers[k] = nil;
144 for k, v in pairs(default_headers) do
146 req.write(t_concat(t));
147 default_headers[k] = nil;
155 req.callback = callback;
156 req.reader = request_reader;
159 listener.register_request(req.handler, req);
164 function destroy_request(request)
166 request.handler.close()
167 listener.disconnect(request.conn, "closed");
171 _M.urlencode = urlencode;