2 -- Copyright (C) 2008-2009 Matthew Wild
3 -- Copyright (C) 2008-2009 Waqas Hussain
5 -- This project is MIT/X11 licensed. Please see the
6 -- COPYING file in the source package for more information.
11 local tonumber, tostring = tonumber, tostring;
12 local ipairs, pairs, print, next= ipairs, pairs, print, next;
13 local collectgarbage = collectgarbage;
14 local m_random = import("math", "random");
15 local format = import("string", "format");
18 local sessions = sessions;
20 local modulemanager = require "core.modulemanager";
21 local log = require "util.logger".init("sessionmanager");
23 local uuid_generate = require "util.uuid".generate;
24 local rm_load_roster = require "core.rostermanager".load_roster;
25 local config_get = require "core.configmanager".get;
27 local fire_event = require "core.eventmanager".fire_event;
29 local gettime = require "socket".gettime;
31 local st = require "util.stanza";
33 local newproxy = newproxy;
34 local getmetatable = getmetatable;
36 module "sessionmanager"
38 local open_sessions = 0;
40 function new_session(conn)
41 local session = { conn = conn, priority = 0, type = "c2s_unauthed", conntime = gettime() };
43 session.trace = newproxy(true);
44 getmetatable(session.trace).__gc = function () open_sessions = open_sessions - 1; end;
46 open_sessions = open_sessions + 1;
47 log("info", "open sessions now: ".. open_sessions);
49 session.send = function (t) w(tostring(t)); end
50 session.ip = conn.ip();
54 function destroy_session(session, err)
55 (session.log or log)("info", "Destroying session");
57 -- Send unavailable presence
58 if session.presence then
59 local pres = st.presence{ type = "unavailable" };
60 if (not err) or err == "closed" then err = "connection closed"; end
61 pres:tag("status"):text("Disconnected: "..err);
62 session:dispatch_stanza(pres);
65 -- Remove session/resource from user's session list
66 if session.host and session.username then
67 -- FIXME: How can the below ever be nil? (but they sometimes are...)
68 if hosts[session.host] and hosts[session.host].sessions[session.username] then
69 if session.resource then
70 hosts[session.host].sessions[session.username].sessions[session.resource] = nil;
73 if not next(hosts[session.host].sessions[session.username].sessions) then
74 log("debug", "All resources of %s are now offline", session.username);
75 hosts[session.host].sessions[session.username] = nil;
78 log("error", "host or session table didn't exist, please report this! Host: %s [%s] Sessions: %s [%s]",
79 tostring(hosts[session.host]), tostring(session.host),
80 tostring(hosts[session.host].sessions[session.username] ), tostring(session.username));
84 for k in pairs(session) do
91 function make_authenticated(session, username)
92 session.username = username;
93 if session.type == "c2s_unauthed" then
99 -- returns true, nil on success
100 -- returns nil, err_type, err, err_message on failure
101 function bind_resource(session, resource)
102 if not session.username then return nil, "auth", "not-authorized", "Cannot bind resource before authentication"; end
103 if session.resource then return nil, "cancel", "already-bound", "Cannot bind multiple resources on a single connection"; end
104 -- We don't support binding multiple resources
106 resource = resource or uuid_generate();
107 --FIXME: Randomly-generated resources must be unique per-user, and never conflict with existing
109 if not hosts[session.host].sessions[session.username] then
110 hosts[session.host].sessions[session.username] = { sessions = {} };
112 local sessions = hosts[session.host].sessions[session.username].sessions;
113 local limit = config_get(session.host, "core", "max_resources") or 10;
114 if #sessions >= limit then
115 return nil, "cancel", "conflict", "Resource limit reached; only "..limit.." resources allowed";
117 if sessions[resource] then
119 local policy = config_get(session.host, "core", "conflict_resolve");
121 if policy == "random" then
122 resource = uuid_generate();
124 elseif policy == "increment" then
125 increment = true; -- TODO ping old resource
126 elseif policy == "kick_new" then
127 return nil, "cancel", "conflict", "Resource already exists";
128 else -- if policy == "kick_old" then
129 sessions[resource]:close {
130 condition = "conflict";
131 text = "Replaced by new connection";
133 if not next(sessions) then
134 hosts[session.host].sessions[session.username] = { sessions = sessions };
137 if increment and sessions[resource] then
139 while sessions[resource.."#"..count] do
142 resource = resource.."#"..count;
147 session.resource = resource;
148 session.full_jid = session.username .. '@' .. session.host .. '/' .. resource;
149 hosts[session.host].sessions[session.username].sessions[resource] = session;
151 session.roster = rm_load_roster(session.username, session.host);
156 function streamopened(session, attr)
157 local send = session.send;
158 session.host = attr.to or error("Client failed to specify destination hostname");
159 session.version = tonumber(attr.version) or 0;
160 session.streamid = m_random(1000000, 99999999);
161 (session.log or session)("debug", "Client sent opening <stream:stream> to %s", session.host);
164 send("<?xml version='1.0'?>");
165 send(format("<stream:stream xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' id='%s' from='%s' version='1.0'>", session.streamid, session.host));
167 if not hosts[session.host] then
168 -- We don't serve this host...
169 session:close{ condition = "host-unknown", text = "This server does not serve "..tostring(session.host)};
174 local features = st.stanza("stream:features");
175 fire_event("stream-features", session, features);
179 (session.log or log)("info", "Sent reply <stream:stream> to client");
180 session.notopen = nil;
183 function send_to_available_resources(user, host, stanza)
185 local to = stanza.attr.to;
186 stanza.attr.to = nil;
187 local h = hosts[host];
188 if h and h.type == "local" then
189 local u = h.sessions[user];
191 for k, session in pairs(u.sessions) do
192 if session.presence then
193 session.send(stanza);