--- Prosody IM v0.4
--- Copyright (C) 2008-2009 Matthew Wild
--- Copyright (C) 2008-2009 Waqas Hussain
---
+-- 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 tonumber, tostring = tonumber, tostring;
-local ipairs, pairs, print, next= ipairs, pairs, print, next;
-local collectgarbage = collectgarbage;
-local m_random = import("math", "random");
-local format = import("string", "format");
+local tostring, setmetatable = tostring, setmetatable;
+local pairs, next= pairs, next;
local hosts = hosts;
-local sessions = sessions;
+local full_sessions = prosody.full_sessions;
+local bare_sessions = prosody.bare_sessions;
-local modulemanager = require "core.modulemanager";
-local log = require "util.logger".init("sessionmanager");
-local error = error;
-local uuid_generate = require "util.uuid".generate;
+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 nameprep = require "util.encodings".stringprep.nameprep;
-
-local fire_event = require "core.eventmanager".fire_event;
+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 st = require "util.stanza";
-
-local newproxy = newproxy;
-local getmetatable = getmetatable;
-
module "sessionmanager"
-local open_sessions = 0;
-
function new_session(conn)
- local session = { conn = conn, priority = 0, 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("info", "open sessions now: ".. open_sessions);
+ local session = { conn = conn, type = "c2s_unauthed", conntime = gettime() };
+ local filter = initialize_filters(session);
local w = conn.write;
- session.send = function (t) w(tostring(t)); end
- session.ip = conn.ip();
+ 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 destroy_session(session, err)
- (session.log or log)("info", "Destroying session");
-
- -- Send unavailable presence
- if session.presence then
- local pres = st.presence{ type = "unavailable" };
- if (not err) or err == "closed" then err = "connection closed"; end
- pres:tag("status"):text("Disconnected: "..err):up();
- session:dispatch_stanza(pres);
+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 ~= "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
+ session.thread = { run = function (_, data) return session.data(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.host and session.username then
- -- FIXME: How can the below ever be nil? (but they sometimes are...)
- if hosts[session.host] and hosts[session.host].sessions[session.username] then
- if session.resource then
- hosts[session.host].sessions[session.username].sessions[session.resource] = nil;
- end
-
- if not next(hosts[session.host].sessions[session.username].sessions) then
- log("debug", "All resources of %s are now offline", session.username);
- hosts[session.host].sessions[session.username] = nil;
- end
- else
- log("error", "host or session table didn't exist, please report this! Host: %s [%s] Sessions: %s [%s]",
- tostring(hosts[session.host]), tostring(session.host),
- tostring(hosts[session.host].sessions[session.username] ), tostring(session.username));
+ 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
- end
-
- for k in pairs(session) do
- if k ~= "trace" then
- session[k] = nil;
+
+ 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
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 = resource or uuid_generate();
+ 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
- hosts[session.host].sessions[session.username] = { sessions = {} };
+ 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;
- local limit = config_get(session.host, "core", "max_resources") or 10;
- if #sessions >= limit then
- return nil, "cancel", "conflict", "Resource limit reached; only "..limit.." resources allowed";
- end
if sessions[resource] then
-- Resource conflict
- local policy = config_get(session.host, "core", "conflict_resolve");
+ local policy = config_get(session.host, "conflict_resolve");
local increment;
if policy == "random" then
resource = uuid_generate();
};
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
end
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);
-
+ 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 streamopened(session, attr)
- local send = session.send;
- session.host = attr.to or error("Client failed to specify destination hostname");
- session.host = nameprep(session.host);
- session.version = tonumber(attr.version) or 0;
- session.streamid = m_random(1000000, 99999999);
- (session.log or session)("debug", "Client sent opening <stream:stream> to %s", session.host);
-
- 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));
-
- if not hosts[session.host] then
- -- We don't serve this host...
- session:close{ condition = "host-unknown", text = "This server does not serve "..tostring(session.host)};
- return;
+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
-
- local features = st.stanza("stream:features");
- fire_event("stream-features", session, features);
-
- send(features);
-
- (session.log or log)("info", "Sent reply <stream:stream> to client");
- session.notopen = nil;
-end
-
-function streamclosed(session)
- session.send("</stream:stream>");
- session.notopen = true;
+ return count;
end
-function send_to_available_resources(user, host, stanza)
+function send_to_interested_resources(user, host, stanza)
+ local jid = user.."@"..host;
local count = 0;
- local to = stanza.attr.to;
- stanza.attr.to = nil;
- local h = hosts[host];
- if h and h.type == "local" then
- local u = h.sessions[user];
- if u then
- for k, session in pairs(u.sessions) do
- if session.presence then
- session.send(stanza);
- count = count + 1;
- end
+ 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
- stanza.attr.to = to;
return count;
end
projects / prosody.git / blobdiff