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-rw-r--r--core/s2smanager.lua178
-rw-r--r--core/sessionmanager.lua11
-rw-r--r--core/stanza_router.lua25
-rw-r--r--core/xmlhandlers.lua38
-rw-r--r--net/xmppclient_listener.lua2
-rw-r--r--net/xmppserver_listener.lua95
-rw-r--r--util/hashes.lua27
7 files changed, 350 insertions, 26 deletions
diff --git a/core/s2smanager.lua b/core/s2smanager.lua
new file mode 100644
index 00000000..1d718305
--- /dev/null
+++ b/core/s2smanager.lua
@@ -0,0 +1,178 @@
+
+local hosts = hosts;
+local sessions = sessions;
+local socket = require "socket";
+local format = string.format;
+local tostring, pairs, ipairs, getmetatable, print, newproxy, error, tonumber
+ = tostring, pairs, ipairs, getmetatable, print, newproxy, error, tonumber;
+
+local connlisteners_get = require "net.connlisteners".get;
+local wraptlsclient = require "net.server".wraptlsclient;
+local modulemanager = require "core.modulemanager";
+
+local uuid_gen = require "util.uuid".generate;
+
+local logger_init = require "util.logger".init;
+
+local log = logger_init("s2smanager");
+
+local md5_hash = require "util.hashes".md5;
+
+local dialback_secret = "This is very secret!!! Ha!";
+
+module "s2smanager"
+
+function connect_host(from_host, to_host)
+end
+
+function send_to_host(from_host, to_host, data)
+ if hosts[to_host] then
+ -- Write to connection
+ hosts[to_host].send(data);
+ log("debug", "stanza sent over s2s");
+ else
+ log("debug", "opening a new outgoing connection for this stanza");
+ local host_session = new_outgoing(from_host, to_host);
+ -- Store in buffer
+ host_session.sendq = { data };
+ end
+end
+
+function disconnect_host(host)
+
+end
+
+local open_sessions = 0;
+
+function new_incoming(conn)
+ local session = { conn = conn, priority = 0, type = "s2sin_unauthed", direction = "incoming" };
+ if true then
+ session.trace = newproxy(true);
+ getmetatable(session.trace).__gc = function () open_sessions = open_sessions - 1; print("s2s session got collected, now "..open_sessions.." s2s sessions are allocated") end;
+ end
+ open_sessions = open_sessions + 1;
+ local w = conn.write;
+ session.send = function (t) w(tostring(t)); end
+ return session;
+end
+
+function new_outgoing(from_host, to_host)
+ local host_session = { to_host = to_host, from_host = from_host, notopen = true, type = "s2sout_unauthed", direction = "outgoing" };
+ hosts[to_host] = host_session;
+
+ local cl = connlisteners_get("xmppserver");
+
+ local conn, handler = socket.tcp()
+ --FIXME: Below parameters (ports/ip) are incorrect (use SRV)
+ conn:connect(to_host, 5269);
+ conn = wraptlsclient(cl, conn, to_host, 5269, 0, 1, hosts[from_host].ssl_ctx );
+ host_session.conn = conn;
+
+ -- Register this outgoing connection so that xmppserver_listener knows about it
+ -- otherwise it will assume it is a new incoming connection
+ cl.register_outgoing(conn, host_session);
+
+ do
+ local conn_name = "s2sout"..tostring(conn):match("[a-f0-9]*$");
+ host_session.log = logger_init(conn_name);
+ end
+
+ local w = conn.write;
+ host_session.send = function (t) w(tostring(t)); end
+
+ conn.write(format([[<stream:stream xmlns='jabber:server' xmlns:db='jabber:server:dialback' xmlns:stream='http://etherx.jabber.org/streams' from='%s' to='%s' version='1.0'>]], from_host, to_host));
+
+ return host_session;
+end
+
+function streamopened(session, attr)
+ session.log("debug", "s2s stream opened");
+ local send = session.send;
+
+ session.version = tonumber(attr.version) or 0;
+ if session.version >= 1.0 and not (attr.to and attr.from) then
+ print("to: "..tostring(attr.to).." from: "..tostring(attr.from));
+ --error(session.to_host.." failed to specify 'to' or 'from' hostname as per RFC");
+ log("warn", (session.to_host or "(unknown)").." failed to specify 'to' or 'from' hostname as per RFC");
+ end
+
+ if session.direction == "incoming" then
+ -- Send a reply stream header
+
+ for k,v in pairs(attr) do print("", tostring(k), ":::", tostring(v)); end
+
+ session.to_host = attr.to;
+ session.from_host = attr.from;
+
+ session.streamid = uuid_gen();
+ print(session, session.from_host, "incoming s2s stream opened");
+ send("<?xml version='1.0'?>");
+ send(format("<stream:stream xmlns='jabber:server' xmlns:db='jabber:server:dialback' xmlns:stream='http://etherx.jabber.org/streams' id='%s' from='%s'>", session.streamid, session.to_host));
+ if session.from_host then
+ -- Need to perform dialback to check identity
+ print("to: "..tostring(attr.to).." from: "..tostring(attr.from));
+ print("Need to do dialback here you know!!");
+ end
+ elseif session.direction == "outgoing" then
+ -- If we are just using the connection for verifying dialback keys, we won't try and auth it
+ if not session.dialback_verifying then
+ -- generate dialback key
+ if not attr.id then error("stream response did not give us a streamid!!!"); end
+ session.streamid = attr.id;
+ session.dialback_key = generate_dialback(session.streamid, session.to_host, session.from_host);
+ session.send(format("<db:result from='%s' to='%s'>%s</db:result>", session.from_host, session.to_host, session.dialback_key));
+ session.log("info", "sent dialback key on outgoing s2s stream");
+ else
+ mark_connected(session);
+ end
+ end
+ --[[
+ local features = {};
+ modulemanager.fire_event("stream-features-s2s", session, features);
+
+ send("<stream:features>");
+
+ for _, feature in ipairs(features) do
+ send(tostring(feature));
+ end
+
+ send("</stream:features>");]]
+ log("info", "s2s stream opened successfully");
+ session.notopen = nil;
+end
+
+function generate_dialback(id, to, from)
+ return md5_hash(id..to..from..dialback_secret); -- FIXME: See XEP-185 and XEP-220
+end
+
+function verify_dialback(id, to, from, key)
+ return key == generate_dialback(id, to, from);
+end
+
+function make_authenticated(session)
+ if session.type == "s2sout_unauthed" then
+ session.type = "s2sout";
+ elseif session.type == "s2sin_unauthed" then
+ session.type = "s2sin";
+ else
+ return false;
+ end
+ session.log("info", "connection is now authenticated");
+
+ mark_connected(session);
+
+ return true;
+end
+
+function mark_connected(session)
+ local sendq, send = session.sendq, session.send;
+ if sendq then
+ session.log("debug", "sending queued stanzas across new connection");
+ for _, data in ipairs(sendq) do
+ session.log("debug", "sending: %s", tostring(data));
+ send(data);
+ end
+ end
+end
+
+return _M; \ No newline at end of file
diff --git a/core/sessionmanager.lua b/core/sessionmanager.lua
index 682f12df..2b7659d2 100644
--- a/core/sessionmanager.lua
+++ b/core/sessionmanager.lua
@@ -35,14 +35,15 @@ end
function destroy_session(session)
session.log("info", "Destroying session");
- if session.username then
+ if session.host and 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;
+ if hosts[session.host] and hosts[session.host].sessions[session.username] then
+ 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
end
end
session.conn = nil;
diff --git a/core/stanza_router.lua b/core/stanza_router.lua
index 2399c25f..905de6e3 100644
--- a/core/stanza_router.lua
+++ b/core/stanza_router.lua
@@ -26,7 +26,7 @@ function core_process_stanza(origin, stanza)
if stanza.name == "iq" and not(#stanza.tags == 1 and stanza.tags[1].attr.xmlns) then
if stanza.attr.type == "set" or stanza.attr.type == "get" then
error("Invalid IQ");
- elseif #stanza.tags > 1 or not(stanza.attr.type == "error" or stanza.attr.type == "result") then
+ elseif #stanza.tags > 1 and not(stanza.attr.type == "error" or stanza.attr.type == "result") then
error("Invalid IQ");
end
end
@@ -49,10 +49,8 @@ function core_process_stanza(origin, stanza)
core_handle_stanza(origin, stanza);
elseif stanza.name == "iq" and not select(3, jid_split(to)) then
core_handle_stanza(origin, stanza);
- elseif origin.type == "c2s" then
+ elseif origin.type == "c2s" or origin.type == "s2sin" then
core_route_stanza(origin, stanza);
- elseif origin.type == "s2sin" then
- core_deliver_stanza(origin, stanza);
end
end
@@ -98,7 +96,7 @@ function core_handle_stanza(origin, stanza)
log("debug", "Routing stanza to local");
handle_stanza(session, stanza);
end
- elseif origin.type == "s2sin_unauthed" then
+ elseif origin.type == "s2sin_unauthed" or origin.type == "s2sin" then
if stanza.attr.xmlns == "jabber:server:dialback" then
if stanza.name == "verify" then
-- We are being asked to verify the key, to ensure it was generated by us
@@ -113,7 +111,8 @@ function core_handle_stanza(origin, stanza)
type = "valid"
end
origin.send(format("<db:verify from='%s' to='%s' id='%s' type='%s'>%s</db:verify>", attr.to, attr.from, attr.id, type, stanza[1]));
- elseif stanza.name == "result" then
+ elseif stanza.name == "result" and origin.type == "s2sin_unauthed" then
+ -- he wants to be identified through dialback
-- We need to check the key with the Authoritative server
local attr = stanza.attr;
origin.from_host = attr.from;
@@ -244,22 +243,18 @@ function core_route_stanza(origin, stanza)
end
end
end
- else
+ elseif origin.type == "c2s" then
-- Remote host
+ --stanza.attr.xmlns = "jabber:server";
+ stanza.attr.xmlns = nil;
log("debug", "sending s2s stanza: %s", tostring(stanza));
- stanza.attr.xmlns = "jabber:server";
send_s2s(origin.host, host, stanza);
+ else
+ log("warn", "received stanza from unhandled connection type: %s", origin.type);
end
stanza.attr.to = to; -- reset
end
-function core_deliver_stanza(origin, stanza)
- local name, attr = stanza.name, stanza.attr;
- if name == "message" then
-
- end
-end
-
function handle_stanza_toremote(stanza)
log("error", "Stanza bound for remote host, but s2s is not implemented");
end
diff --git a/core/xmlhandlers.lua b/core/xmlhandlers.lua
index 9b76731a..3037a848 100644
--- a/core/xmlhandlers.lua
+++ b/core/xmlhandlers.lua
@@ -3,6 +3,10 @@ require "util.stanza"
local st = stanza;
local tostring = tostring;
+local pairs = pairs;
+local ipairs = ipairs;
+local type = type;
+local print = print;
local format = string.format;
local m_random = math.random;
local t_insert = table.insert;
@@ -17,6 +21,10 @@ local error = error;
module "xmlhandlers"
+local ns_prefixes = {
+ ["http://www.w3.org/XML/1998/namespace"] = "xml";
+ }
+
function init_xmlhandlers(session, streamopened)
local ns_stack = { "" };
local curr_ns = "";
@@ -24,7 +32,7 @@ function init_xmlhandlers(session, streamopened)
local chardata = {};
local xml_handlers = {};
local log = session.log or default_log;
- local print = function (...) log("info", "xmlhandlers", t_concatall({...}, "\t")); end
+ --local print = function (...) log("info", "xmlhandlers", t_concatall({...}, "\t")); end
local send = session.send;
@@ -35,8 +43,25 @@ function init_xmlhandlers(session, streamopened)
stanza:text(t_concat(chardata));
chardata = {};
end
- curr_ns,name = name:match("^(.+):([%w%-]+)$");
- attr.xmlns = curr_ns;
+ curr_ns,name = name:match("^(.+)|([%w%-]+)$");
+ if curr_ns ~= "jabber:server" then
+ attr.xmlns = curr_ns;
+ end
+
+ -- FIXME !!!!!
+ for i, k in ipairs(attr) do
+ if type(k) == "string" then
+ local ns, nm = k:match("^([^|]+)|?([^|]-)$")
+ if ns and nm then
+ ns = ns_prefixes[ns];
+ if ns then
+ attr[ns..":"..nm] = attr[k];
+ attr[i] = ns..":"..nm;
+ attr[k] = nil;
+ end
+ end
+ end
+ end
if not stanza then --if we are not currently inside a stanza
if session.notopen then
@@ -53,7 +78,10 @@ function init_xmlhandlers(session, streamopened)
stanza = st.stanza(name, attr); --{ to = attr.to, type = attr.type, id = attr.id, xmlns = curr_ns });
curr_tag = stanza;
else -- we are inside a stanza, so add a tag
- attr.xmlns = curr_ns;
+ attr.xmlns = nil;
+ if curr_ns ~= "jabber:server" and curr_ns ~= "jabber:client" then
+ attr.xmlns = curr_ns;
+ end
stanza:tag(name, attr);
end
end
@@ -63,7 +91,7 @@ function init_xmlhandlers(session, streamopened)
end
end
function xml_handlers:EndElement(name)
- curr_ns,name = name:match("^(.+):([%w%-]+)$");
+ curr_ns,name = name:match("^(.+)|([%w%-]+)$");
if (not stanza) or #stanza.last_add < 0 or (#stanza.last_add > 0 and name ~= stanza.last_add[#stanza.last_add].name) then
if name == "stream" then
log("debug", "Stream closed");
diff --git a/net/xmppclient_listener.lua b/net/xmppclient_listener.lua
index e722e55b..068557c8 100644
--- a/net/xmppclient_listener.lua
+++ b/net/xmppclient_listener.lua
@@ -22,7 +22,7 @@ local xmppclient = { default_port = 5222 };
local function session_reset_stream(session)
-- Reset stream
- local parser = lxp.new(init_xmlhandlers(session, sm_streamopened), ":");
+ local parser = lxp.new(init_xmlhandlers(session, sm_streamopened), "|");
session.parser = parser;
session.notopen = true;
diff --git a/net/xmppserver_listener.lua b/net/xmppserver_listener.lua
new file mode 100644
index 00000000..7c5b0d9c
--- /dev/null
+++ b/net/xmppserver_listener.lua
@@ -0,0 +1,95 @@
+
+local logger = require "logger";
+local lxp = require "lxp"
+local init_xmlhandlers = require "core.xmlhandlers"
+local sm_new_session = require "core.sessionmanager".new_session;
+local s2s_new_incoming = require "core.s2smanager".new_incoming;
+local s2s_streamopened = require "core.s2smanager".streamopened;
+
+local connlisteners_register = require "net.connlisteners".register;
+
+local t_insert = table.insert;
+local t_concat = table.concat;
+local t_concatall = function (t, sep) local tt = {}; for _, s in ipairs(t) do t_insert(tt, tostring(s)); end return t_concat(tt, sep); end
+local m_random = math.random;
+local format = string.format;
+local sm_new_session, sm_destroy_session = sessionmanager.new_session, sessionmanager.destroy_session; --import("core.sessionmanager", "new_session", "destroy_session");
+local st = stanza;
+
+local sessions = {};
+local xmppserver = { default_port = 5269 };
+
+-- These are session methods --
+
+local function session_reset_stream(session)
+ -- Reset stream
+ local parser = lxp.new(init_xmlhandlers(session, s2s_streamopened), "|");
+ session.parser = parser;
+
+ session.notopen = true;
+
+ function session.data(conn, data)
+ parser:parse(data);
+ end
+ return true;
+end
+
+-- End of session methods --
+
+function xmppserver.listener(conn, data)
+ local session = sessions[conn];
+ if not session then
+ session = s2s_new_incoming(conn);
+ sessions[conn] = session;
+
+ -- Logging functions --
+
+ local mainlog, log = log;
+ do
+ local conn_name = "s2sin"..tostring(conn):match("[a-f0-9]+$");
+ log = logger.init(conn_name);
+ end
+ local print = function (...) log("info", t_concatall({...}, "\t")); end
+ session.log = log;
+
+ print("Incoming s2s connection");
+
+ session.reset_stream = session_reset_stream;
+
+ session_reset_stream(session); -- Initialise, ready for use
+
+ -- FIXME: Below function should be session,stanza - and xmlhandlers should use :method() notation to call,
+ -- this will avoid the useless indirection we have atm
+ -- (I'm on a mission, no time to fix now)
+ session.stanza_dispatch = function (stanza) return core_process_stanza(session, stanza); end
+
+ end
+ if data then
+ session.data(conn, data);
+ end
+end
+
+function xmppserver.disconnect(conn)
+end
+
+function xmppserver.register_outgoing(conn, session)
+ session.direction = "outgoing";
+ sessions[conn] = session;
+
+ session.reset_stream = session_reset_stream;
+ session_reset_stream(session); -- Initialise, ready for use
+
+ -- FIXME: Below function should be session,stanza - and xmlhandlers should use :method() notation to call,
+ -- this will avoid the useless indirection we have atm
+ -- (I'm on a mission, no time to fix now)
+ session.stanza_dispatch = function (stanza) return core_process_stanza(session, stanza); end
+end
+
+connlisteners_register("xmppserver", xmppserver);
+
+
+-- We need to perform some initialisation when a connection is created
+-- We also need to perform that same initialisation at other points (SASL, TLS, ...)
+
+-- ...and we need to handle data
+-- ...and record all sessions associated with connections \ No newline at end of file
diff --git a/util/hashes.lua b/util/hashes.lua
new file mode 100644
index 00000000..64374a8f
--- /dev/null
+++ b/util/hashes.lua
@@ -0,0 +1,27 @@
+
+local softreq = function (...) return select(2, pcall(require, ...)); end
+
+module "hashes"
+
+local md5 = softreq("md5");
+if md5 then
+ if md5.digest then
+ local md5_digest = md5.digest;
+ local sha1_digest = sha1.digest;
+ function _M.md5(input)
+ return md5_digest(input);
+ end
+ function _M.sha1(input)
+ return sha1_digest(input);
+ end
+ elseif md5.sumhexa then
+ local md5_sumhexa = md5.sumhexa;
+ function _M.md5(input)
+ return md5_sumhexa(input);
+ end
+ else
+ error("md5 library found, but unrecognised... no hash functions will be available", 0);
+ end
+end
+
+return _M;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 17:22:54 +0000