mirror of https://github.com/bjc/prosody
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
297 lines
9.2 KiB
297 lines
9.2 KiB
-- 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.
|
|
--
|
|
|
|
module:set_global();
|
|
|
|
local add_task = require "util.timer".add_task;
|
|
local new_xmpp_stream = require "util.xmppstream".new;
|
|
local nameprep = require "util.encodings".stringprep.nameprep;
|
|
local sessionmanager = require "core.sessionmanager";
|
|
local st = require "util.stanza";
|
|
local sm_new_session, sm_destroy_session = sessionmanager.new_session, sessionmanager.destroy_session;
|
|
local uuid_generate = require "util.uuid".generate;
|
|
|
|
local xpcall, tostring, type = xpcall, tostring, type;
|
|
local traceback = debug.traceback;
|
|
|
|
local xmlns_xmpp_streams = "urn:ietf:params:xml:ns:xmpp-streams";
|
|
|
|
local log = module._log;
|
|
|
|
local c2s_timeout = module:get_option_number("c2s_timeout");
|
|
local stream_close_timeout = module:get_option_number("c2s_close_timeout", 5);
|
|
local opt_keepalives = module:get_option_boolean("tcp_keepalives", false);
|
|
|
|
local sessions = module:shared("sessions");
|
|
local core_process_stanza = prosody.core_process_stanza;
|
|
local hosts = prosody.hosts;
|
|
|
|
local stream_callbacks = { default_ns = "jabber:client", handlestanza = core_process_stanza };
|
|
local listener = {};
|
|
|
|
--- Stream events handlers
|
|
local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'};
|
|
local default_stream_attr = { ["xmlns:stream"] = "http://etherx.jabber.org/streams", xmlns = stream_callbacks.default_ns, version = "1.0", id = "" };
|
|
|
|
function stream_callbacks.streamopened(session, attr)
|
|
local send = session.send;
|
|
session.host = nameprep(attr.to);
|
|
if not session.host then
|
|
session:close{ condition = "improper-addressing",
|
|
text = "A valid 'to' attribute is required on stream headers" };
|
|
return;
|
|
end
|
|
session.version = tonumber(attr.version) or 0;
|
|
session.streamid = uuid_generate();
|
|
(session.log or session)("debug", "Client sent opening <stream:stream> to %s", 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
|
|
|
|
send("<?xml version='1.0'?>"..st.stanza("stream:stream", {
|
|
xmlns = 'jabber:client', ["xmlns:stream"] = 'http://etherx.jabber.org/streams';
|
|
id = session.streamid, from = session.host, version = '1.0', ["xml:lang"] = 'en' }):top_tag());
|
|
|
|
(session.log or log)("debug", "Sent reply <stream:stream> to client");
|
|
session.notopen = nil;
|
|
|
|
-- 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;
|
|
|
|
-- Check if TLS compression is used
|
|
local sock = session.conn:socket();
|
|
if sock.info then
|
|
session.compressed = sock:info"compression";
|
|
elseif sock.compression then
|
|
session.compressed = sock:compression(); --COMPAT mw/luasec-hg
|
|
end
|
|
end
|
|
|
|
local features = st.stanza("stream:features");
|
|
hosts[session.host].events.fire_event("stream-features", { origin = session, features = features });
|
|
module:fire_event("stream-features", session, features);
|
|
|
|
send(features);
|
|
end
|
|
|
|
function stream_callbacks.streamclosed(session)
|
|
session.log("debug", "Received </stream:stream>");
|
|
session:close(false);
|
|
end
|
|
|
|
function stream_callbacks.error(session, error, data)
|
|
if error == "no-stream" then
|
|
session.log("debug", "Invalid opening stream header");
|
|
session:close("invalid-namespace");
|
|
elseif error == "parse-error" then
|
|
(session.log or log)("debug", "Client XML parse error: %s", tostring(data));
|
|
session:close("not-well-formed");
|
|
elseif error == "stream-error" then
|
|
local condition, text = "undefined-condition";
|
|
for child in data:children() do
|
|
if child.attr.xmlns == xmlns_xmpp_streams then
|
|
if child.name ~= "text" then
|
|
condition = child.name;
|
|
else
|
|
text = child:get_text();
|
|
end
|
|
if condition ~= "undefined-condition" and text then
|
|
break;
|
|
end
|
|
end
|
|
end
|
|
text = condition .. (text and (" ("..text..")") or "");
|
|
session.log("info", "Session closed by remote with error: %s", text);
|
|
session:close(nil, text);
|
|
end
|
|
end
|
|
|
|
local function handleerr(err) log("error", "Traceback[c2s]: %s: %s", tostring(err), traceback()); end
|
|
function stream_callbacks.handlestanza(session, stanza)
|
|
stanza = session.filter("stanzas/in", stanza);
|
|
if stanza then
|
|
return xpcall(function () return core_process_stanza(session, stanza) end, handleerr);
|
|
end
|
|
end
|
|
|
|
--- Session methods
|
|
local function session_close(session, reason)
|
|
local log = session.log or log;
|
|
if session.conn then
|
|
if session.notopen then
|
|
session.send("<?xml version='1.0'?>");
|
|
session.send(st.stanza("stream:stream", default_stream_attr):top_tag());
|
|
end
|
|
if reason then -- nil == no err, initiated by us, false == initiated by client
|
|
if type(reason) == "string" then -- assume stream error
|
|
log("debug", "Disconnecting client, <stream:error> is: %s", reason);
|
|
session.send(st.stanza("stream:error"):tag(reason, {xmlns = 'urn:ietf:params:xml:ns:xmpp-streams' }));
|
|
elseif type(reason) == "table" then
|
|
if reason.condition then
|
|
local stanza = st.stanza("stream:error"):tag(reason.condition, stream_xmlns_attr):up();
|
|
if reason.text then
|
|
stanza:tag("text", stream_xmlns_attr):text(reason.text):up();
|
|
end
|
|
if reason.extra then
|
|
stanza:add_child(reason.extra);
|
|
end
|
|
log("debug", "Disconnecting client, <stream:error> is: %s", tostring(stanza));
|
|
session.send(stanza);
|
|
elseif reason.name then -- a stanza
|
|
log("debug", "Disconnecting client, <stream:error> is: %s", tostring(reason));
|
|
session.send(reason);
|
|
end
|
|
end
|
|
end
|
|
|
|
session.send("</stream:stream>");
|
|
function session.send() return false; end
|
|
|
|
local reason = (reason and (reason.text or reason.condition)) or reason;
|
|
session.log("info", "c2s stream for %s closed: %s", session.full_jid or ("<"..session.ip..">"), reason or "session closed");
|
|
|
|
-- Authenticated incoming stream may still be sending us stanzas, so wait for </stream:stream> from remote
|
|
local conn = session.conn;
|
|
if reason == nil and not session.notopen and session.type == "c2s" then
|
|
-- Grace time to process data from authenticated cleanly-closed stream
|
|
add_task(stream_close_timeout, function ()
|
|
if not session.destroyed then
|
|
session.log("warn", "Failed to receive a stream close response, closing connection anyway...");
|
|
sm_destroy_session(session, reason);
|
|
conn:close();
|
|
end
|
|
end);
|
|
else
|
|
sm_destroy_session(session, reason);
|
|
conn:close();
|
|
end
|
|
end
|
|
end
|
|
|
|
module:hook_global("user-deleted", function(event)
|
|
local username, host = event.username, event.host;
|
|
local user = hosts[host].sessions[username];
|
|
if user and user.sessions then
|
|
for jid, session in pairs(user.sessions) do
|
|
session:close{ condition = "not-authorized", text = "Account deleted" };
|
|
end
|
|
end
|
|
end, 200);
|
|
|
|
--- Port listener
|
|
function listener.onconnect(conn)
|
|
local session = sm_new_session(conn);
|
|
sessions[conn] = session;
|
|
|
|
session.log("info", "Client connected");
|
|
|
|
-- Client is using legacy SSL (otherwise mod_tls sets this flag)
|
|
if conn:ssl() then
|
|
session.secure = true;
|
|
|
|
-- Check if TLS compression is used
|
|
local sock = conn:socket();
|
|
if sock.info then
|
|
session.compressed = sock:info"compression";
|
|
elseif sock.compression then
|
|
session.compressed = sock:compression(); --COMPAT mw/luasec-hg
|
|
end
|
|
end
|
|
|
|
if opt_keepalives then
|
|
conn:setoption("keepalive", opt_keepalives);
|
|
end
|
|
|
|
session.close = session_close;
|
|
|
|
local stream = new_xmpp_stream(session, stream_callbacks);
|
|
session.stream = stream;
|
|
session.notopen = true;
|
|
|
|
function session.reset_stream()
|
|
session.notopen = true;
|
|
session.stream:reset();
|
|
end
|
|
|
|
local filter = session.filter;
|
|
function session.data(data)
|
|
data = filter("bytes/in", data);
|
|
if data then
|
|
local ok, err = stream:feed(data);
|
|
if ok then return; end
|
|
log("debug", "Received invalid XML (%s) %d bytes: %s", tostring(err), #data, data:sub(1, 300):gsub("[\r\n]+", " "):gsub("[%z\1-\31]", "_"));
|
|
session:close("not-well-formed");
|
|
end
|
|
end
|
|
|
|
|
|
if c2s_timeout then
|
|
add_task(c2s_timeout, function ()
|
|
if session.type == "c2s_unauthed" then
|
|
session:close("connection-timeout");
|
|
end
|
|
end);
|
|
end
|
|
|
|
session.dispatch_stanza = stream_callbacks.handlestanza;
|
|
end
|
|
|
|
function listener.onincoming(conn, data)
|
|
local session = sessions[conn];
|
|
if session then
|
|
session.data(data);
|
|
end
|
|
end
|
|
|
|
function listener.ondisconnect(conn, err)
|
|
local session = sessions[conn];
|
|
if session then
|
|
(session.log or log)("info", "Client disconnected: %s", err or "connection closed");
|
|
sm_destroy_session(session, err);
|
|
sessions[conn] = nil;
|
|
end
|
|
end
|
|
|
|
function listener.associate_session(conn, session)
|
|
sessions[conn] = session;
|
|
end
|
|
|
|
module:hook("server-stopping", function(event)
|
|
local reason = event.reason;
|
|
for _, session in pairs(sessions) do
|
|
session:close{ condition = "system-shutdown", text = reason };
|
|
end
|
|
end, 1000);
|
|
|
|
|
|
|
|
module:provides("net", {
|
|
name = "c2s";
|
|
listener = listener;
|
|
default_port = 5222;
|
|
encryption = "starttls";
|
|
multiplex = {
|
|
pattern = "^<.*:stream.*%sxmlns%s*=%s*(['\"])jabber:client%1.*>";
|
|
};
|
|
});
|
|
|
|
module:provides("net", {
|
|
name = "legacy_ssl";
|
|
listener = listener;
|
|
encryption = "ssl";
|
|
multiplex = {
|
|
pattern = "^<.*:stream.*%sxmlns%s*=%s*(['\"])jabber:client%1.*>";
|
|
};
|
|
});
|
|
|
|
|
|
|