4 local lxp = require "lxp"; |
4 local lxp = require "lxp"; |
5 local init_xmlhandlers = require "core.xmlhandlers" |
5 local init_xmlhandlers = require "core.xmlhandlers" |
6 local server = require "net.server"; |
6 local server = require "net.server"; |
7 local httpserver = require "net.httpserver"; |
7 local httpserver = require "net.httpserver"; |
8 local sm = require "core.sessionmanager"; |
8 local sm = require "core.sessionmanager"; |
|
9 local sm_destroy_session = sm.destroy_session; |
9 local new_uuid = require "util.uuid".generate; |
10 local new_uuid = require "util.uuid".generate; |
10 local fire_event = require "core.eventmanager".fire_event; |
11 local fire_event = require "core.eventmanager".fire_event; |
11 local core_process_stanza = core_process_stanza; |
12 local core_process_stanza = core_process_stanza; |
12 local st = require "util.stanza"; |
13 local st = require "util.stanza"; |
13 local log = require "util.logger".init("bosh"); |
14 local log = require "util.logger".init("bosh"); |
14 local stream_callbacks = { stream_tag = "http://jabber.org/protocol/httpbind|body" }; |
15 local stream_callbacks = { stream_tag = "http://jabber.org/protocol/httpbind|body" }; |
15 |
16 local config = require "core.configmanager"; |
16 local xmlns_bosh = "http://jabber.org/protocol/httpbind"; -- (hard-coded into a literal in session.send) |
17 local xmlns_bosh = "http://jabber.org/protocol/httpbind"; -- (hard-coded into a literal in session.send) |
17 |
18 |
18 local BOSH_DEFAULT_HOLD = 1; |
19 local BOSH_DEFAULT_HOLD = tonumber(config.get("*", "core", "bosh_default_hold")) or 1; |
19 local BOSH_DEFAULT_INACTIVITY = 30; |
20 local BOSH_DEFAULT_INACTIVITY = tonumber(config.get("*", "core", "bosh_max_inactivity")) or 30; |
20 local BOSH_DEFAULT_POLLING = 5; |
21 local BOSH_DEFAULT_POLLING = tonumber(config.get("*", "core", "bosh_max_polling")) or 5; |
21 local BOSH_DEFAULT_REQUESTS = 2; |
22 local BOSH_DEFAULT_REQUESTS = tonumber(config.get("*", "core", "bosh_max_requests")) or 2; |
22 local BOSH_DEFAULT_MAXPAUSE = 120; |
23 local BOSH_DEFAULT_MAXPAUSE = tonumber(config.get("*", "core", "bosh_max_pause")) or 300; |
23 |
24 |
24 local t_insert, t_remove, t_concat = table.insert, table.remove, table.concat; |
25 local t_insert, t_remove, t_concat = table.insert, table.remove, table.concat; |
25 local os_time = os.time; |
26 local os_time = os.time; |
26 |
27 |
27 local sessions = {}; |
28 local sessions = {}; |
28 |
29 local inactive_sessions = {}; -- Sessions which have no open requests |
29 -- Used to respond to idle sessions |
30 |
|
31 -- Used to respond to idle sessions (those with waiting requests) |
30 local waiting_requests = {}; |
32 local waiting_requests = {}; |
31 function on_destroy_request(request) |
33 function on_destroy_request(request) |
32 waiting_requests[request] = nil; |
34 waiting_requests[request] = nil; |
33 end |
35 end |
34 |
36 |
35 function handle_request(method, body, request) |
37 function handle_request(method, body, request) |
36 if (not body) or request.method ~= "POST" then |
38 if (not body) or request.method ~= "POST" then |
37 --return { status = "200 OK", headers = { ["Content-Type"] = "text/html" }, body = "<html><body>You don't look like a BOSH client to me... what do you want?</body></html>" }; |
|
38 return "<html><body>You really don't look like a BOSH client to me... what do you want?</body></html>"; |
39 return "<html><body>You really don't look like a BOSH client to me... what do you want?</body></html>"; |
39 end |
40 end |
40 if not method then |
41 if not method then |
41 log("debug", "Request %s suffered error %s", tostring(request.id), body); |
42 log("debug", "Request %s suffered error %s", tostring(request.id), body); |
42 return; |
43 return; |
58 log("debug", "We are holding too many requests, so..."); |
59 log("debug", "We are holding too many requests, so..."); |
59 if #session.send_buffer > 0 then |
60 if #session.send_buffer > 0 then |
60 log("debug", "...sending what is in the buffer") |
61 log("debug", "...sending what is in the buffer") |
61 session.send(t_concat(session.send_buffer)); |
62 session.send(t_concat(session.send_buffer)); |
62 session.send_buffer = {}; |
63 session.send_buffer = {}; |
63 return; |
|
64 else |
64 else |
65 -- or an empty response |
65 -- or an empty response |
66 log("debug", "...sending an empty response"); |
66 log("debug", "...sending an empty response"); |
67 session.send(""); |
67 session.send(""); |
68 return; |
|
69 end |
68 end |
70 elseif #session.send_buffer > 0 then |
69 elseif #session.send_buffer > 0 then |
71 log("debug", "Session has data in the send buffer, will send now.."); |
70 log("debug", "Session has data in the send buffer, will send now.."); |
72 local resp = t_concat(session.send_buffer); |
71 local resp = t_concat(session.send_buffer); |
73 session.send_buffer = {}; |
72 session.send_buffer = {}; |
74 session.send(resp); |
73 session.send(resp); |
75 return; |
|
76 end |
74 end |
77 |
75 |
78 if not request.destroyed and session.bosh_wait then |
76 if not request.destroyed and session.bosh_wait then |
79 request.reply_before = os_time() + session.bosh_wait; |
77 request.reply_before = os_time() + session.bosh_wait; |
80 request.on_destroy = on_destroy_request; |
78 request.on_destroy = on_destroy_request; |
84 log("debug", "Had nothing to say, so leaving request unanswered for now"); |
82 log("debug", "Had nothing to say, so leaving request unanswered for now"); |
85 return true; |
83 return true; |
86 end |
84 end |
87 end |
85 end |
88 |
86 |
|
87 local session_close_reply = tostring(st.stanza("body", { xmlns = xmlns_bosh, type = "terminate" })); |
89 local function bosh_reset_stream(session) session.notopen = true; end |
88 local function bosh_reset_stream(session) session.notopen = true; end |
90 local function bosh_close_stream(session, reason) end |
89 local function bosh_close_stream(session, reason) end |
91 |
90 |
92 function stream_callbacks.streamopened(request, attr) |
91 function stream_callbacks.streamopened(request, attr) |
93 print("Attr:") |
92 print("Attr:") |
94 for k,v in pairs(attr) do print("", k, v); end |
93 for k,v in pairs(attr) do print("", k, v); end |
95 log("debug", "BOSH body open (sid: %s)", attr.sid); |
94 log("debug", "BOSH body open (sid: %s)", attr.sid); |
96 local sid = attr.sid |
95 local sid = attr.sid |
97 if not sid then |
96 if not sid then |
|
97 -- New session request |
98 -- TODO: Sanity checks here (rid, to, known host, etc.) |
98 -- TODO: Sanity checks here (rid, to, known host, etc.) |
99 request.notopen = nil; -- Signals that we accept this opening tag |
99 request.notopen = nil; -- Signals that we accept this opening tag |
100 |
100 |
101 -- New session |
101 -- New session |
102 sid = tostring(new_uuid()); |
102 sid = tostring(new_uuid()); |
103 local session = { type = "c2s_unauthed", conn = {}, sid = sid, rid = attr.rid, host = attr.to, bosh_version = attr.ver, bosh_wait = attr.wait, streamid = sid, |
103 local session = { type = "c2s_unauthed", conn = {}, sid = sid, rid = attr.rid, host = attr.to, bosh_version = attr.ver, bosh_wait = attr.wait, streamid = sid, |
104 bosh_hold = BOSH_DEFAULT_HOLD, |
104 bosh_hold = BOSH_DEFAULT_HOLD, bosh_max_inactive = BOSH_DEFAULT_INACTIVITY, |
105 requests = { }, send_buffer = {}, reset_stream = bosh_reset_stream, close = bosh_close_stream }; |
105 requests = { }, send_buffer = {}, reset_stream = bosh_reset_stream, close = bosh_close_stream, dispatch_stanza = core_process_stanza }; |
106 sessions[sid] = session; |
106 sessions[sid] = session; |
107 log("info", "New BOSH session, assigned it sid '%s'", sid); |
107 log("info", "New BOSH session, assigned it sid '%s'", sid); |
108 local r, send_buffer = session.requests, session.send_buffer; |
108 local r, send_buffer = session.requests, session.send_buffer; |
109 local response = { } |
109 local response = { } |
110 function session.send(s) |
110 function session.send(s) |
131 oldest_request:destroy(); |
131 oldest_request:destroy(); |
132 t_remove(r, 1); |
132 t_remove(r, 1); |
133 end |
133 end |
134 elseif s ~= "" then |
134 elseif s ~= "" then |
135 log("debug", "Saved to send buffer because there are %d open requests", #r); |
135 log("debug", "Saved to send buffer because there are %d open requests", #r); |
|
136 if session.bosh_max_inactive and not inactive_sessions[session] then |
|
137 inactive_sessions[session] = os_time(); |
|
138 (session.log or log)("debug", "BOSH session marked as inactive at %d", inactive_sessions[session]); |
|
139 end |
136 -- Hmm, no requests are open :( |
140 -- Hmm, no requests are open :( |
137 t_insert(session.send_buffer, tostring(s)); |
141 t_insert(session.send_buffer, tostring(s)); |
138 log("debug", "There are now %d things in the send_buffer", #session.send_buffer); |
142 log("debug", "There are now %d things in the send_buffer", #session.send_buffer); |
139 end |
143 end |
140 end |
144 end |
143 |
147 |
144 local features = st.stanza("stream:features"); |
148 local features = st.stanza("stream:features"); |
145 fire_event("stream-features", session, features); |
149 fire_event("stream-features", session, features); |
146 --xmpp:version='1.0' xmlns:xmpp='urn:xmpp:xbosh' |
150 --xmpp:version='1.0' xmlns:xmpp='urn:xmpp:xbosh' |
147 local response = st.stanza("body", { xmlns = xmlns_bosh, |
151 local response = st.stanza("body", { xmlns = xmlns_bosh, |
148 inactivity = "30", polling = "5", requests = "2", hold = tostring(session.bosh_hold), maxpause = "120", |
152 inactivity = tostring(BOSH_DEFAULT_INACTIVITY), polling = tostring(BOSH_DEFAULT_POLLING), requests = tostring(BOSH_DEFAULT_REQUESTS), hold = tostring(session.bosh_hold), maxpause = "120", |
149 sid = sid, ver = '1.6', from = session.host, secure = 'true', ["xmpp:version"] = "1.0", |
153 sid = sid, ver = '1.6', from = session.host, secure = 'true', ["xmpp:version"] = "1.0", |
150 ["xmlns:xmpp"] = "urn:xmpp:xbosh", ["xmlns:stream"] = "http://etherx.jabber.org/streams" }):add_child(features); |
154 ["xmlns:xmpp"] = "urn:xmpp:xbosh", ["xmlns:stream"] = "http://etherx.jabber.org/streams" }):add_child(features); |
151 request:send(tostring(response)); |
155 request:send(tostring(response)); |
152 |
156 |
153 request.sid = sid; |
157 request.sid = sid; |
159 -- Unknown sid |
163 -- Unknown sid |
160 log("info", "Client tried to use sid '%s' which we don't know about", sid); |
164 log("info", "Client tried to use sid '%s' which we don't know about", sid); |
161 request:send(tostring(st.stanza("body", { xmlns = xmlns_bosh, type = "terminate", condition = "item-not-found" }))); |
165 request:send(tostring(st.stanza("body", { xmlns = xmlns_bosh, type = "terminate", condition = "item-not-found" }))); |
162 request.notopen = nil; |
166 request.notopen = nil; |
163 return; |
167 return; |
|
168 end |
|
169 |
|
170 if attr.type == "terminate" then |
|
171 -- Client wants to end this session |
|
172 (session.log or log)("info", "BOSH client disconnected"); |
|
173 for _, held_request in ipairs(session.requests) do |
|
174 held_request:send(session_close_reply); |
|
175 held_request:destroy(); |
|
176 end |
|
177 sm_destroy_session(session); |
|
178 sessions[sid] = nil; |
|
179 request.notopen = nil; |
|
180 return; |
|
181 end |
|
182 |
|
183 -- If session was inactive, make sure it is now marked as not |
|
184 if #session.requests == 0 then |
|
185 (session.log or log)("debug", "BOSH client now active again at %d", os_time()); |
|
186 inactive_sessions[session] = nil; |
164 end |
187 end |
165 |
188 |
166 if session.notopen then |
189 if session.notopen then |
167 local features = st.stanza("stream:features"); |
190 local features = st.stanza("stream:features"); |
168 fire_event("stream-features", session, features); |
191 fire_event("stream-features", session, features); |
198 if request.conn then |
221 if request.conn then |
199 sessions[request.sid].send(""); |
222 sessions[request.sid].send(""); |
200 end |
223 end |
201 end |
224 end |
202 end |
225 end |
|
226 |
|
227 now = now - 3; |
|
228 for session, inactive_since in pairs(inactive_sessions) do |
|
229 if now - inactive_since > session.bosh_max_inactive then |
|
230 (session.log or log)("debug", "BOSH client inactive too long, destroying session at %d", now); |
|
231 sessions[session.sid] = nil; |
|
232 inactive_sessions[session] = nil; |
|
233 sm_destroy_session(session, "BOSH client silent for over "..session.bosh_max_inactive.." seconds"); |
|
234 end |
|
235 end |
203 end |
236 end |
204 |
237 |
205 httpserver.new{ port = 5280, base = "http-bind", handler = handle_request, ssl = false} |
238 httpserver.new{ port = 5280, base = "http-bind", handler = handle_request, ssl = false} |
206 server.addtimer(on_timer); |
239 server.addtimer(on_timer); |