+-- 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 tostring = tostring;
+local tostring, setmetatable = tostring, setmetatable;
+local pairs, next= pairs, next;
-local log = require "util.logger".init("sessionmanager");
+local hosts = hosts;
+local full_sessions = full_sessions;
+local bare_sessions = bare_sessions;
+
+local logger = require "util.logger";
+local log = logger.init("sessionmanager");
+local rm_load_roster = require "core.rostermanager".load_roster;
+local config_get = require "core.configmanager".get;
+local resourceprep = require "util.encodings".stringprep.resourceprep;
+local nodeprep = require "util.encodings".stringprep.nodeprep;
+local uuid_generate = require "util.uuid".generate;
+
+local initialize_filters = require "util.filters".initialize;
+local gettime = require "socket".gettime;
+
+local newproxy = newproxy;
+local getmetatable = getmetatable;
module "sessionmanager"
+local open_sessions = 0;
+
function new_session(conn)
- local session = { conn = conn, notopen = true, priority = 0, type = "c2s_unauthed" };
+ local session = { conn = conn, type = "c2s_unauthed", conntime = gettime() };
+ if true then
+ session.trace = newproxy(true);
+ getmetatable(session.trace).__gc = function () open_sessions = open_sessions - 1; end;
+ end
+ open_sessions = open_sessions + 1;
+ log("debug", "open sessions now: %d", open_sessions);
+
+ local filter = initialize_filters(session);
local w = conn.write;
- session.send = function (t) w(tostring(t)); end
+ session.send = function (t)
+ if t.name then
+ t = filter("stanzas/out", t);
+ end
+ if t then
+ t = filter("bytes/out", tostring(t));
+ if t then
+ return w(conn, t);
+ end
+ end
+ end
+ session.ip = conn:ip();
+ local conn_name = "c2s"..tostring(session):match("[a-f0-9]+$");
+ session.log = logger.init(conn_name);
+
return session;
end
-function send_to_session(session, data)
- log("debug", "Sending...", tostring(data));
- session.conn.write(tostring(data));
+local resting_session = { -- Resting, not dead
+ destroyed = true;
+ type = "c2s_destroyed";
+ close = function (session)
+ session.log("debug", "Attempt to close already-closed session");
+ end;
+ filter = function (type, data) return data; end;
+ }; resting_session.__index = resting_session;
+
+function retire_session(session)
+ local log = session.log or log;
+ for k in pairs(session) do
+ if k ~= "trace" and k ~= "log" and k ~= "id" then
+ session[k] = nil;
+ end
+ end
+
+ function session.send(data) log("debug", "Discarding data sent to resting session: %s", tostring(data)); return false; end
+ function session.data(data) log("debug", "Discarding data received from resting session: %s", tostring(data)); end
+ return setmetatable(session, resting_session);
+end
+
+function destroy_session(session, err)
+ (session.log or log)("debug", "Destroying session for %s (%s@%s)%s", session.full_jid or "(unknown)", session.username or "(unknown)", session.host or "(unknown)", err and (": "..err) or "");
+ if session.destroyed then return; end
+
+ -- Remove session/resource from user's session list
+ if session.full_jid then
+ local host_session = hosts[session.host];
+
+ -- Allow plugins to prevent session destruction
+ if host_session.events.fire_event("pre-resource-unbind", {session=session, error=err}) then
+ return;
+ end
+
+ host_session.sessions[session.username].sessions[session.resource] = nil;
+ full_sessions[session.full_jid] = nil;
+
+ if not next(host_session.sessions[session.username].sessions) then
+ log("debug", "All resources of %s are now offline", session.username);
+ host_session.sessions[session.username] = nil;
+ bare_sessions[session.username..'@'..session.host] = nil;
+ end
+
+ host_session.events.fire_event("resource-unbind", {session=session, error=err});
+ end
+
+ retire_session(session);
+end
+
+function make_authenticated(session, username)
+ username = nodeprep(username);
+ if not username or #username == 0 then return nil, "Invalid username"; end
+ session.username = username;
+ if session.type == "c2s_unauthed" then
+ session.type = "c2s";
+ end
+ session.log("info", "Authenticated as %s@%s", username or "(unknown)", session.host or "(unknown)");
+ return true;
+end
+
+-- returns true, nil on success
+-- returns nil, err_type, err, err_message on failure
+function bind_resource(session, resource)
+ if not session.username then return nil, "auth", "not-authorized", "Cannot bind resource before authentication"; end
+ if session.resource then return nil, "cancel", "already-bound", "Cannot bind multiple resources on a single connection"; end
+ -- We don't support binding multiple resources
+
+ resource = resourceprep(resource);
+ resource = resource ~= "" and resource or uuid_generate();
+ --FIXME: Randomly-generated resources must be unique per-user, and never conflict with existing
+
+ if not hosts[session.host].sessions[session.username] then
+ local sessions = { sessions = {} };
+ hosts[session.host].sessions[session.username] = sessions;
+ bare_sessions[session.username..'@'..session.host] = sessions;
+ else
+ local sessions = hosts[session.host].sessions[session.username].sessions;
+ if sessions[resource] then
+ -- Resource conflict
+ local policy = config_get(session.host, "core", "conflict_resolve");
+ local increment;
+ if policy == "random" then
+ resource = uuid_generate();
+ increment = true;
+ elseif policy == "increment" then
+ increment = true; -- TODO ping old resource
+ elseif policy == "kick_new" then
+ return nil, "cancel", "conflict", "Resource already exists";
+ else -- if policy == "kick_old" then
+ sessions[resource]:close {
+ condition = "conflict";
+ text = "Replaced by new connection";
+ };
+ if not next(sessions) then
+ hosts[session.host].sessions[session.username] = { sessions = sessions };
+ bare_sessions[session.username.."@"..session.host] = hosts[session.host].sessions[session.username];
+ end
+ end
+ if increment and sessions[resource] then
+ local count = 1;
+ while sessions[resource.."#"..count] do
+ count = count + 1;
+ end
+ resource = resource.."#"..count;
+ end
+ end
+ end
+
+ session.resource = resource;
+ session.full_jid = session.username .. '@' .. session.host .. '/' .. resource;
+ hosts[session.host].sessions[session.username].sessions[resource] = session;
+ full_sessions[session.full_jid] = session;
+
+ local err;
+ session.roster, err = rm_load_roster(session.username, session.host);
+ if err then
+ full_sessions[session.full_jid] = nil;
+ hosts[session.host].sessions[session.username].sessions[resource] = nil;
+ session.full_jid = nil;
+ session.resource = nil;
+ if next(bare_sessions[session.username..'@'..session.host].sessions) == nil then
+ bare_sessions[session.username..'@'..session.host] = nil;
+ hosts[session.host].sessions[session.username] = nil;
+ end
+ session.log("error", "Roster loading failed: %s", err);
+ return nil, "cancel", "internal-server-error", "Error loading roster";
+ end
+
+ hosts[session.host].events.fire_event("resource-bind", {session=session});
+
+ return true;
+end
+
+function send_to_available_resources(user, host, stanza)
+ local jid = user.."@"..host;
+ local count = 0;
+ local user = bare_sessions[jid];
+ if user then
+ for k, session in pairs(user.sessions) do
+ if session.presence then
+ session.send(stanza);
+ count = count + 1;
+ end
+ end
+ end
+ return count;
+end
+
+function send_to_interested_resources(user, host, stanza)
+ local jid = user.."@"..host;
+ local count = 0;
+ local user = bare_sessions[jid];
+ if user then
+ for k, session in pairs(user.sessions) do
+ if session.interested then
+ session.send(stanza);
+ count = count + 1;
+ end
+ end
+ end
+ return count;
end
-return _M;
\ No newline at end of file
+return _M;
projects / prosody.git / blobdiff