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local tonumber, tostring = tonumber, tostring;
local ipairs, pairs, print= ipairs, pairs, print;
local collectgarbage = collectgarbage;
local m_random = import("math", "random");
local format = import("string", "format");
local hosts = hosts;
local sessions = sessions;
local modulemanager = require "core.modulemanager";
local log = require "util.logger".init("sessionmanager");
local error = error;
local uuid_generate = require "util.uuid".uuid_generate;
local rm_load_roster = require "core.rostermanager".load_roster;
local newproxy = newproxy;
local getmetatable = getmetatable;
module "sessionmanager"
function new_session(conn)
local session = { conn = conn, notopen = true, priority = 0, type = "c2s_unauthed" };
if true then
session.trace = newproxy(true);
getmetatable(session.trace).__gc = function () print("Session got collected") end;
end
local w = conn.write;
session.send = function (t) w(tostring(t)); end
return session;
end
function destroy_session(session)
if not (session and session.disconnect) then return; end
log("debug", "Destroying session...");
session.disconnect();
if session.username then
if session.resource then
hosts[session.host].sessions[session.username].sessions[session.resource] = nil;
end
local nomore = true;
for res, ssn in pairs(hosts[session.host].sessions[session.username]) do
nomore = false;
end
if nomore then
hosts[session.host].sessions[session.username] = nil;
end
end
session.conn = nil;
session.disconnect = nil;
for k in pairs(session) do
if k ~= "trace" then
session[k] = nil;
end
end
collectgarbage("collect");
collectgarbage("collect");
collectgarbage("collect");
collectgarbage("collect");
collectgarbage("collect");
end
function send_to_session(session, data)
log("debug", "Sending: %s", tostring(data));
session.conn.write(tostring(data));
end
function make_authenticated(session, username)
session.username = username;
if session.type == "c2s_unauthed" then
session.type = "c2s";
end
return true;
end
function bind_resource(session, resource)
if not session.username then return false, "auth"; end
if session.resource then return false, "constraint"; end -- We don't support binding multiple resources
resource = 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
hosts[session.host].sessions[session.username] = { sessions = {} };
else
if hosts[session.host].sessions[session.username].sessions[resource] then
-- Resource conflict
return false, "conflict"; -- TODO kick old resource
end
end
session.resource = resource;
session.full_jid = session.username .. '@' .. session.host .. '/' .. resource;
hosts[session.host].sessions[session.username].sessions[resource] = session;
session.roster = rm_load_roster(session.username, session.host);
return true;
end
function streamopened(session, attr)
local send = session.send;
session.host = attr.to or error("Client failed to specify destination hostname");
session.version = tonumber(attr.version) or 0;
session.streamid = m_random(1000000, 99999999);
print(session, session.host, "Client opened stream");
send("<?xml version='1.0'?>");
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));
local features = {};
modulemanager.fire_event("stream-features", session, features);
send("<stream:features>");
for _, feature in ipairs(features) do
send_to_session(session, tostring(feature));
end
send("</stream:features>");
log("info", "Stream opened successfully");
session.notopen = nil;
end
return _M;
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