-- 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 log = logger.init("mod_bosh");
local initialize_filters = require "util.filters".initialize;
local math_min = math.min;
+ local xpcall, tostring, type = xpcall, tostring, type;
+ local traceback = debug.traceback;
local xmlns_streams = "http://etherx.jabber.org/streams";
local xmlns_xmpp_streams = "urn:ietf:params:xml:ns:xmpp-streams";
local bosh_max_wait = module:get_option_number("bosh_max_wait", 120);
local consider_bosh_secure = module:get_option_boolean("consider_bosh_secure");
-
-local default_headers = { ["Content-Type"] = "text/xml; charset=utf-8" };
-
local cross_domain = module:get_option("cross_domain_bosh", false);
-if cross_domain then
- default_headers["Access-Control-Allow-Methods"] = "GET, POST, OPTIONS";
- default_headers["Access-Control-Allow-Headers"] = "Content-Type";
- default_headers["Access-Control-Max-Age"] = "7200";
-
- if cross_domain == true then
- default_headers["Access-Control-Allow-Origin"] = "*";
- elseif type(cross_domain) == "table" then
- cross_domain = table.concat(cross_domain, ", ");
- end
- if type(cross_domain) == "string" then
- default_headers["Access-Control-Allow-Origin"] = cross_domain;
- end
-end
+
+if cross_domain == true then cross_domain = "*"; end
+if type(cross_domain) == "table" then cross_domain = table.concat(cross_domain, ", "); end
local trusted_proxies = module:get_option_set("trusted_proxies", {"127.0.0.1"})._items;
local sessions, inactive_sessions = module:shared("sessions", "inactive_sessions");
-- Used to respond to idle sessions (those with waiting requests)
-local waiting_requests = {};
+local waiting_requests = module:shared("waiting_requests");
function on_destroy_request(request)
log("debug", "Request destroyed: %s", tostring(request));
waiting_requests[request] = nil;
end
end
-function handle_OPTIONS(request)
- local headers = {};
- for k,v in pairs(default_headers) do headers[k] = v; end
- headers["Content-Type"] = nil;
- return { headers = headers, body = "" };
+local function set_cross_domain_headers(response)
+ local headers = response.headers;
+ headers.access_control_allow_methods = "GET, POST, OPTIONS";
+ headers.access_control_allow_headers = "Content-Type";
+ headers.access_control_max_age = "7200";
+ headers.access_control_allow_origin = cross_domain;
+ return response;
+end
+
+function handle_OPTIONS(event)
+ if cross_domain and event.request.headers.origin then
+ set_cross_domain_headers(event.response);
+ end
+ return "";
end
function handle_POST(event)
local context = { request = request, response = response, notopen = true };
local stream = new_xmpp_stream(context, stream_callbacks);
response.context = context;
+
+ local headers = response.headers;
+ headers.content_type = "text/xml; charset=utf-8";
+
+ if cross_domain and event.request.headers.origin then
+ set_cross_domain_headers(response);
+ end
-- stream:feed() calls the stream_callbacks, so all stanzas in
-- the body are processed in this next line before it returns.
-- In particular, the streamopened() stream callback is where
-- much of the session logic happens, because it's where we first
-- get to see the 'sid' of this request.
- stream:feed(body);
+ if not stream:feed(body) then
+ module:log("warn", "Error parsing BOSH payload")
+ return 400;
+ end
-- Stanzas (if any) in the request have now been processed, and
-- we take care of the high-level BOSH logic here, including
local r = session.requests;
log("debug", "Session %s has %d out of %d requests open", context.sid, #r, session.bosh_hold);
log("debug", "and there are %d things in the send_buffer:", #session.send_buffer);
- for i, thing in ipairs(session.send_buffer) do
- log("debug", " %s", tostring(thing));
- end
if #r > session.bosh_hold then
-- We are holding too many requests, send what's in the buffer,
log("debug", "We are holding too many requests, so...");
return true; -- Inform http server we shall reply later
end
end
+ module:log("warn", "Unable to associate request with a session (incomplete request?)");
+ return 400;
end
local response_body = tostring(close_reply);
for _, held_request in ipairs(session.requests) do
- held_request.headers = default_headers;
held_request:send(response_body);
end
- sessions[session.sid] = nil;
+ sessions[session.sid] = nil;
inactive_sessions[session] = nil;
sm_destroy_session(session);
end
local oldest_request = r[1];
if oldest_request and not session.bosh_processing then
log("debug", "We have an open request, so sending on that");
- oldest_request.headers = default_headers;
local body_attr = { xmlns = "http://jabber.org/protocol/httpbind",
["xmlns:stream"] = "http://etherx.jabber.org/streams";
type = session.bosh_terminate and "terminate" or nil;
if not session then
-- Unknown sid
log("info", "Client tried to use sid '%s' which we don't know about", sid);
- response.headers = default_headers;
response:send(tostring(st.stanza("body", { xmlns = xmlns_bosh, type = "terminate", condition = "item-not-found" })));
context.notopen = nil;
return;
local features = st.stanza("stream:features");
hosts[session.host].events.fire_event("stream-features", { origin = session, features = features });
fire_event("stream-features", session, features);
- session.send(tostring(features));
+ session.send(features);
session.notopen = nil;
end
end
+ local function handleerr(err) log("error", "Traceback[bosh]: %s", traceback(tostring(err), 2)); end
function stream_callbacks.handlestanza(context, stanza)
if context.ignore then return; end
log("debug", "BOSH stanza received: %s\n", stanza:top_tag());
stanza.attr.xmlns = nil;
end
stanza = session.filter("stanzas/in", stanza);
- core_process_stanza(session, stanza);
+ if stanza then
+ return xpcall(function () return core_process_stanza(session, stanza) end, handleerr);
+ end
end
end
-function stream_callbacks.streamclosed(request)
- local session = sessions[request.sid];
+function stream_callbacks.streamclosed(context)
+ local session = sessions[context.sid];
if session then
session.bosh_processing = false;
if #session.send_buffer > 0 then
log("debug", "Error parsing BOSH request payload; %s", error);
if not context.sid then
local response = context.response;
- response.headers = default_headers;
response.status_code = 400;
response:send();
return;
end
end
-local dead_sessions = {};
+local dead_sessions = module:shared("dead_sessions");
function on_timer()
-- log("debug", "Checking for requests soon to timeout...");
-- Identify requests timing out within the next few seconds
projects / prosody.git / commitdiff