--- Prosody IM v0.4
--- Copyright (C) 2008-2009 Matthew Wild
--- Copyright (C) 2008-2009 Waqas Hussain
+-- Prosody IM
+-- Copyright (C) 2008-2010 Matthew Wild
+-- Copyright (C) 2008-2010 Waqas Hussain
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
local logger = require "logger";
local log = logger.init("xmppclient_listener");
-local lxp = require "lxp"
-local init_xmlhandlers = require "core.xmlhandlers"
-local sm_new_session = require "core.sessionmanager".new_session;
+local new_xmpp_stream = require "util.xmppstream".new;
local connlisteners_register = require "net.connlisteners".register;
-local t_insert = table.insert;
-local t_concat = table.concat;
-local t_concatall = function (t, sep) local tt = {}; for _, s in ipairs(t) do t_insert(tt, tostring(s)); end return t_concat(tt, sep); end
-local m_random = math.random;
-local format = string.format;
local sessionmanager = require "core.sessionmanager";
local sm_new_session, sm_destroy_session = sessionmanager.new_session, sessionmanager.destroy_session;
local sm_streamopened = sessionmanager.streamopened;
local sm_streamclosed = sessionmanager.streamclosed;
local st = require "util.stanza";
+local xpcall = xpcall;
+local tostring = tostring;
+local type = type;
+local traceback = debug.traceback;
-local stream_callbacks = { stream_tag = "http://etherx.jabber.org/streams|stream",
- default_ns = "jabber:client",
+local config = require "core.configmanager";
+local opt_keepalives = config.get("*", "core", "tcp_keepalives");
+
+local stream_callbacks = { default_ns = "jabber:client",
streamopened = sm_streamopened, streamclosed = sm_streamclosed, handlestanza = core_process_stanza };
+local xmlns_xmpp_streams = "urn:ietf:params:xml:ns:xmpp-streams";
+
function stream_callbacks.error(session, error, data)
if error == "no-stream" then
session.log("debug", "Invalid opening stream header");
session:close("invalid-namespace");
- elseif session.close then
- (session.log or log)("debug", "Client XML parse error: %s", tostring(error));
- session:close("xml-not-well-formed");
+ elseif error == "parse-error" then
+ (session.log or log)("debug", "Client XML parse error: %s", tostring(data));
+ session:close("not-well-formed");
+ elseif error == "stream-error" then
+ local condition, text = "undefined-condition";
+ for child in data:children() do
+ if child.attr.xmlns == xmlns_xmpp_streams then
+ if child.name ~= "text" then
+ condition = child.name;
+ else
+ text = child:get_text();
+ end
+ if condition ~= "undefined-condition" and text then
+ break;
+ end
+ end
+ end
+ text = condition .. (text and (" ("..text..")") or "");
+ session.log("info", "Session closed by remote with error: %s", text);
+ session:close(nil, text);
end
end
-local function handleerr(err) log("error", "Traceback[c2s]: %s: %s", tostring(err), debug.traceback()); end
-function stream_callbacks.handlestanza(a, b)
- xpcall(function () core_process_stanza(a, b) end, handleerr);
+local function handleerr(err) log("error", "Traceback[c2s]: %s: %s", tostring(err), traceback()); end
+function stream_callbacks.handlestanza(session, stanza)
+ stanza = session.filter("stanzas/in", stanza);
+ if stanza then
+ return xpcall(function () return core_process_stanza(session, stanza) end, handleerr);
+ end
end
local sessions = {};
-- These are session methods --
-local function session_reset_stream(session)
- -- Reset stream
- local parser = lxp.new(init_xmlhandlers(session, stream_callbacks), "|");
- session.parser = parser;
-
- session.notopen = true;
-
- function session.data(conn, data)
- local ok, err = parser:parse(data);
- if ok then return; end
- session:close("xml-not-well-formed");
- end
-
- return true;
-end
-
-
local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'};
+local default_stream_attr = { ["xmlns:stream"] = "http://etherx.jabber.org/streams", xmlns = stream_callbacks.default_ns, version = "1.0", id = "" };
local function session_close(session, reason)
local log = session.log or log;
if session.conn then
+ if session.notopen then
+ session.send("<?xml version='1.0'?>");
+ session.send(st.stanza("stream:stream", default_stream_attr):top_tag());
+ end
if reason then
if type(reason) == "string" then -- assume stream error
log("info", "Disconnecting client, <stream:error> is: %s", reason);
end
end
session.send("</stream:stream>");
- session.conn.close();
- xmppclient.disconnect(session.conn, "stream error");
+ session.conn:close();
+ xmppclient.ondisconnect(session.conn, (reason and (reason.text or reason.condition)) or reason or "session closed");
end
end
-- End of session methods --
-function xmppclient.listener(conn, data)
- local session = sessions[conn];
- if not session then
- session = sm_new_session(conn);
- sessions[conn] = session;
-
- -- Logging functions --
-
- local conn_name = "c2s"..tostring(conn):match("[a-f0-9]+$");
- session.log = logger.init(conn_name);
-
- session.log("info", "Client connected");
-
- session.reset_stream = session_reset_stream;
- session.close = session_close;
-
- session_reset_stream(session); -- Initialise, ready for use
-
- session.dispatch_stanza = stream_callbacks.handlestanza;
+function xmppclient.onconnect(conn)
+ local session = sm_new_session(conn);
+ sessions[conn] = session;
+
+ session.log("info", "Client connected");
+
+ -- Client is using legacy SSL (otherwise mod_tls sets this flag)
+ if conn:ssl() then
+ session.secure = true;
end
- if data then
- session.data(conn, data);
+
+ if opt_keepalives ~= nil then
+ conn:setoption("keepalive", opt_keepalives);
+ end
+
+ session.close = session_close;
+
+ local stream = new_xmpp_stream(session, stream_callbacks);
+ session.stream = stream;
+
+ session.notopen = true;
+
+ function session.reset_stream()
+ session.notopen = true;
+ session.stream:reset();
+ end
+
+ local filter = session.filter;
+ function session.data(data)
+ data = filter("bytes/in", data);
+ if data then
+ local ok, err = stream:feed(data);
+ if ok then return; end
+ log("debug", "Received invalid XML (%s) %d bytes: %s", tostring(err), #data, data:sub(1, 300):gsub("[\r\n]+", " "):gsub("[%z\1-\31]", "_"));
+ session:close("not-well-formed");
+ end
+ end
+
+ local handlestanza = stream_callbacks.handlestanza;
+ function session.dispatch_stanza(session, stanza)
+ return handlestanza(session, stanza);
+ end
+end
+
+function xmppclient.onincoming(conn, data)
+ local session = sessions[conn];
+ if session then
+ session.data(data);
end
end
-function xmppclient.disconnect(conn, err)
+function xmppclient.ondisconnect(conn, err)
local session = sessions[conn];
if session then
(session.log or log)("info", "Client disconnected: %s", err);
- sm_destroy_session(session);
+ sm_destroy_session(session, err);
sessions[conn] = nil;
session = nil;
- collectgarbage("collect");
end
end
+function xmppclient.associate_session(conn, session)
+ sessions[conn] = session;
+end
+
connlisteners_register("xmppclient", xmppclient);
projects / prosody.git / blobdiff