-- Prosody IM
--- Copyright (C) 2008-2009 Matthew Wild
--- Copyright (C) 2008-2009 Waqas Hussain
+-- 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("xmppserver_listener");
local lxp = require "lxp"
-local init_xmlhandlers = require "core.xmlhandlers"
+local new_xmpp_stream = require "util.xmppstream".new;
local s2s_new_incoming = require "core.s2smanager".new_incoming;
local s2s_streamopened = require "core.s2smanager".streamopened;
local s2s_streamclosed = require "core.s2smanager".streamclosed;
local s2s_destroy_session = require "core.s2smanager".destroy_session;
local s2s_attempt_connect = require "core.s2smanager".attempt_connection;
-local stream_callbacks = { stream_tag = "http://etherx.jabber.org/streams|stream",
- default_ns = "jabber:server",
+local stream_callbacks = { default_ns = "jabber:server",
streamopened = s2s_streamopened, streamclosed = s2s_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:close("invalid-namespace");
- else
+ elseif error == "parse-error" then
session.log("debug", "Server-to-server XML parse error: %s", tostring(error));
- session:close("xml-not-well-formed");
+ 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[s2s]: %s: %s", tostring(err), debug.traceback()); end
-function stream_callbacks.handlestanza(a, b)
- xpcall(function () core_process_stanza(a, b) end, handleerr);
+function stream_callbacks.handlestanza(session, stanza)
+ if stanza.attr.xmlns == "jabber:client" then --COMPAT: Prosody pre-0.6.2 may send jabber:client
+ stanza.attr.xmlns = nil;
+ end
+ stanza = session.filter("stanzas/in", stanza);
+ if stanza then
+ return xpcall(function () return core_process_stanza(session, stanza) end, handleerr);
+ end
end
local connlisteners_register = require "net.connlisteners".register;
-- 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
- log("debug", "Received invalid XML (%s) %d bytes: %s", tostring(err), #data, data:sub(1, 300):gsub("[\r\n]+", " "));
- 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"] = stream_callbacks.stream_tag:gsub("%|[^|]+$", ""), xmlns = stream_callbacks.default_ns, version = "1.0", id = "" };
-local function session_close(session, reason)
+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, remote_reason)
local log = session.log or log;
if session.conn then
if session.notopen then
end
end
session.sends2s("</stream:stream>");
- session.conn.close();
- xmppserver.disconnect(session.conn, "stream error");
+ if session.notopen or not session.conn:close() then
+ session.conn:close(true); -- Force FIXME: timer?
+ end
+ session.conn:close();
+ xmppserver.ondisconnect(session.conn, remote_reason or (reason and (reason.text or reason.condition)) or reason or "stream closed");
end
end
-- End of session methods --
-function xmppserver.listener(conn, data)
- local session = sessions[conn];
- if not session then
- session = s2s_new_incoming(conn);
- sessions[conn] = session;
+local function initialize_session(session)
+ 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
+ (session.log or log)("warn", "Received invalid XML: %s", data);
+ (session.log or log)("warn", "Problem was: %s", err);
+ session:close("not-well-formed");
+ end
+ end
- -- Logging functions --
+ session.close = session_close;
+ local handlestanza = stream_callbacks.handlestanza;
+ function session.dispatch_stanza(session, stanza)
+ return handlestanza(session, stanza);
+ end
+end
-
+function xmppserver.onconnect(conn)
+ if not sessions[conn] then -- May be an existing outgoing session
+ local session = s2s_new_incoming(conn);
+ sessions[conn] = session;
+
+ -- Logging functions --
local conn_name = "s2sin"..tostring(conn):match("[a-f0-9]+$");
session.log = logger.init(conn_name);
session.log("info", "Incoming s2s connection");
- session.reset_stream = session_reset_stream;
- session.close = session_close;
-
- session_reset_stream(session); -- Initialise, ready for use
-
- session.dispatch_stanza = stream_callbacks.handlestanza;
+ initialize_session(session);
end
- if data then
- session.data(conn, data);
+end
+
+function xmppserver.onincoming(conn, data)
+ local session = sessions[conn];
+ if session then
+ session.data(data);
end
end
-function xmppserver.disconnect(conn, err)
+function xmppserver.onstatus(conn, status)
+ if status == "ssl-handshake-complete" then
+ local session = sessions[conn];
+ if session and session.direction == "outgoing" then
+ local format, to_host, from_host = string.format, session.to_host, session.from_host;
+ session.log("debug", "Sending stream header...");
+ session.sends2s(format([[<stream:stream xmlns='jabber:server' xmlns:db='jabber:server:dialback' xmlns:stream='http://etherx.jabber.org/streams' from='%s' to='%s' version='1.0'>]], from_host, to_host));
+ end
+ end
+end
+
+function xmppserver.ondisconnect(conn, err)
local session = sessions[conn];
if session then
if err and err ~= "closed" and session.srv_hosts then
- (session.log or log)("debug", "s2s connection closed unexpectedly");
+ (session.log or log)("debug", "s2s connection attempt failed: %s", err);
if s2s_attempt_connect(session, err) then
- (session.log or log)("debug", "...so we're going to try again");
+ (session.log or log)("debug", "...so we're going to try another target");
return; -- Session lives for now
end
end
- (session.log or log)("info", "s2s disconnected: %s->%s (%s)", tostring(session.from_host), tostring(session.to_host), tostring(err));
- s2s_destroy_session(session);
+ (session.log or log)("info", "s2s disconnected: %s->%s (%s)", tostring(session.from_host), tostring(session.to_host), tostring(err or "closed"));
+ s2s_destroy_session(session, err);
sessions[conn] = nil;
session = nil;
- collectgarbage("collect");
end
end
session.direction = "outgoing";
sessions[conn] = session;
- session.reset_stream = session_reset_stream;
- session.close = session_close;
- session_reset_stream(session); -- Initialise, ready for use
-
- --local function handleerr(err) print("Traceback:", err, debug.traceback()); end
- --session.stanza_dispatch = function (stanza) return select(2, xpcall(function () return core_process_stanza(session, stanza); end, handleerr)); end
+ initialize_session(session);
end
connlisteners_register("xmppserver", xmppserver);
projects / prosody.git / blobdiff