X-Git-Url: https://git.enpas.org/?a=blobdiff_plain;f=core%2Fsessionmanager.lua;h=05b2d64b918b12cd40d53908ff4f198fcc03b785;hb=14b46085cf72301a35aaa02b9e25aef440994928;hp=321469c96410fe52e5245be9ca39744f7459ab9b;hpb=c56049ce6e328b689813453061085ae6dce629e5;p=prosody.git diff --git a/core/sessionmanager.lua b/core/sessionmanager.lua index 321469c9..05b2d64b 100644 --- a/core/sessionmanager.lua +++ b/core/sessionmanager.lua @@ -1,35 +1,29 @@ --- 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 full_sessions = full_sessions; +local bare_sessions = 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; @@ -38,57 +32,87 @@ module "sessionmanager" local open_sessions = 0; function new_session(conn) - local session = { conn = conn, priority = 0, type = "c2s_unauthed", conntime = gettime() }; + 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: ".. open_sessions); + 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.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 for %s (%s@%s)", session.full_jid or "(unknown)", session.username or "(unknown)", session.host or "(unknown)"); - - -- 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 ~= "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.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"; @@ -104,17 +128,16 @@ function bind_resource(session, resource) 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"); @@ -133,6 +156,7 @@ function bind_resource(session, resource) }; 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 @@ -148,66 +172,55 @@ function bind_resource(session, resource) 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; - 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.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 to %s", session.host); - - send(""); - send(format("", 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; - end - - -- If session.secure is *false* (not nil) then it means we /were/ encrypting - -- since we now have a new stream header, session is secured - if session.secure == false then - session.secure = true; + 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 - - local features = st.stanza("stream:features"); - fire_event("stream-features", session, features); - send(features); + hosts[session.host].events.fire_event("resource-bind", {session=session}); - (session.log or log)("debug", "Sent reply to client"); - session.notopen = nil; + return true; end -function streamclosed(session) - session.send(""); - session.notopen = true; +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_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