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-rw-r--r--core/s2smanager.lua96
1 files changed, 59 insertions, 37 deletions
diff --git a/core/s2smanager.lua b/core/s2smanager.lua
index 92f07354..b65fe00c 100644
--- a/core/s2smanager.lua
+++ b/core/s2smanager.lua
@@ -16,8 +16,10 @@ local socket = require "socket";
local format = string.format;
local t_insert, t_sort = table.insert, table.sort;
local get_traceback = debug.traceback;
-local tostring, pairs, ipairs, getmetatable, newproxy, error, tonumber
- = tostring, pairs, ipairs, getmetatable, newproxy, error, tonumber;
+local tostring, pairs, ipairs, getmetatable, newproxy, error, tonumber,
+ setmetatable
+ = tostring, pairs, ipairs, getmetatable, newproxy, error, tonumber,
+ setmetatable;
local idna_to_ascii = require "util.encodings".idna.to_ascii;
local connlisteners_get = require "net.connlisteners".get;
@@ -36,8 +38,6 @@ local log = logger_init("s2smanager");
local sha256_hash = require "util.hashes".sha256;
-local dialback_secret = uuid_gen();
-
local adns, dns = require "net.adns", require "net.dns";
local config = require "core.configmanager";
local connect_timeout = config.get("*", "core", "s2s_timeout") or 60;
@@ -137,7 +137,7 @@ function new_incoming(conn)
open_sessions = open_sessions + 1;
local w, log = conn.write, logger_init("s2sin"..tostring(conn):match("[a-f0-9]+$"));
session.log = log;
- session.sends2s = function (t) log("debug", "sending: %s", tostring(t)); w(tostring(t)); end
+ session.sends2s = function (t) log("debug", "sending: %s", t.top_tag and t:top_tag() or t:match("^([^>]*>?)")); w(conn, tostring(t)); end
incoming_s2s[session] = true;
add_task(connect_timeout, function ()
if session.conn ~= conn or
@@ -145,16 +145,17 @@ function new_incoming(conn)
return; -- Ok, we're connect[ed|ing]
end
-- Not connected, need to close session and clean up
- (session.log or log)("warn", "Destroying incomplete session %s->%s due to inactivity",
+ (session.log or log)("warn", "Destroying incomplete session %s->%s due to inactivity",
session.from_host or "(unknown)", session.to_host or "(unknown)");
session:close("connection-timeout");
end);
return session;
end
-function new_outgoing(from_host, to_host)
- local host_session = { to_host = to_host, from_host = from_host, host = from_host,
- notopen = true, type = "s2sout_unauthed", direction = "outgoing" };
+function new_outgoing(from_host, to_host, connect)
+ local host_session = { to_host = to_host, from_host = from_host, host = from_host,
+ notopen = true, type = "s2sout_unauthed", direction = "outgoing",
+ open_stream = session_open_stream };
hosts[from_host].s2sout[to_host] = host_session;
@@ -165,10 +166,12 @@ function new_outgoing(from_host, to_host)
host_session.log = log;
end
- -- Kick the connection attempting machine
- attempt_connection(host_session);
+ if connect ~= false then
+ -- Kick the connection attempting machine into life
+ attempt_connection(host_session);
+ end
- if not host_session.sends2s then
+ if not host_session.sends2s then
-- A sends2s which buffers data (until the stream is opened)
-- note that data in this buffer will be sent before the stream is authed
-- and will not be ack'd in any way, successful or otherwise
@@ -182,7 +185,6 @@ function new_outgoing(from_host, to_host)
buffer[#buffer+1] = data;
log("debug", "Buffered item %d: %s", #buffer, tostring(data));
end
-
end
return host_session;
@@ -298,7 +300,7 @@ function try_connect(host_session, connect_host, connect_port)
adns.cancel(handle, true);
end
end);
-
+
return true;
end
@@ -323,7 +325,7 @@ function make_connect(host_session, connect_host, connect_port)
end
local cl = connlisteners_get("xmppserver");
- conn = wrapclient(conn, connect_host, connect_port, cl, cl.default_mode or 1, hosts[from_host].ssl_ctx, false );
+ conn = wrapclient(conn, connect_host, connect_port, cl, cl.default_mode or 1 );
host_session.conn = conn;
-- Register this outgoing connection so that xmppserver_listener knows about it
@@ -331,9 +333,10 @@ function make_connect(host_session, connect_host, connect_port)
cl.register_outgoing(conn, host_session);
local w, log = conn.write, host_session.log;
- host_session.sends2s = function (t) log("debug", "sending: %s", tostring(t)); w(tostring(t)); end
+ host_session.sends2s = function (t) log("debug", "sending: %s", (t.top_tag and t:top_tag()) or t:match("^[^>]*>?")); w(conn, tostring(t)); end
+
+ host_session:open_stream(from_host, to_host);
- 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' xml:lang='en'>]], from_host, to_host));
log("debug", "Connection attempt in progress...");
add_task(connect_timeout, function ()
if host_session.conn ~= conn or
@@ -342,13 +345,20 @@ function make_connect(host_session, connect_host, connect_port)
return; -- Ok, we're connect[ed|ing]
end
-- Not connected, need to close session and clean up
- (host_session.log or log)("warn", "Destroying incomplete session %s->%s due to inactivity",
+ (host_session.log or log)("warn", "Destroying incomplete session %s->%s due to inactivity",
host_session.from_host or "(unknown)", host_session.to_host or "(unknown)");
host_session:close("connection-timeout");
end);
return true;
end
+function session_open_stream(session, from, to)
+ session.sends2s(st.stanza("stream:stream", {
+ xmlns='jabber:server', ["xmlns:db"]='jabber:server:dialback',
+ ["xmlns:stream"]='http://etherx.jabber.org/streams',
+ from=from, to=to, version='1.0', ["xml:lang"]='en'}):top_tag());
+end
+
function streamopened(session, attr)
local send = session.sends2s;
@@ -360,7 +370,6 @@ function streamopened(session, attr)
end
if session.version >= 1.0 and not (attr.to and attr.from) then
-
(session.log or log)("warn", "Remote of stream "..(session.from_host or "(unknown)").."->"..(session.to_host or "(unknown)")
.." failed to specify to (%s) and/or from (%s) hostname as per RFC", tostring(attr.to), tostring(attr.from));
end
@@ -378,13 +387,13 @@ function streamopened(session, attr)
return;
end
send("<?xml version='1.0'?>");
- send(stanza("stream:stream", { xmlns='jabber:server', ["xmlns:db"]='jabber:server:dialback',
+ send(stanza("stream:stream", { xmlns='jabber:server', ["xmlns:db"]='jabber:server:dialback',
["xmlns:stream"]='http://etherx.jabber.org/streams', id=session.streamid, from=session.to_host, to=session.from_host, version=(session.version > 0 and "1.0" or nil) }):top_tag());
if session.version >= 1.0 then
local features = st.stanza("stream:features");
if session.to_host then
- hosts[session.to_host].events.fire_event("s2s-stream-features", { session = session, features = features });
+ hosts[session.to_host].events.fire_event("s2s-stream-features", { origin = session, features = features });
else
(session.log or log)("warn", "No 'to' on stream header from %s means we can't offer any features", session.from_host or "unknown host");
end
@@ -399,13 +408,13 @@ function streamopened(session, attr)
-- Send unauthed buffer
-- (stanzas which are fine to send before dialback)
- -- Note that this is *not* the stanza queue (which
+ -- Note that this is *not* the stanza queue (which
-- we can only send if auth succeeds) :)
local send_buffer = session.send_buffer;
if send_buffer and #send_buffer > 0 then
log("debug", "Sending s2s send_buffer now...");
for i, data in ipairs(send_buffer) do
- session.sends2s(data);
+ session.sends2s(tostring(data));
send_buffer[i] = nil;
end
end
@@ -421,16 +430,12 @@ function streamopened(session, attr)
end
end
end
-
session.notopen = nil;
end
function streamclosed(session)
- (session.log or log)("debug", "</stream:stream>");
- if session.sends2s then
- session.sends2s("</stream:stream>");
- end
- session.notopen = true;
+ (session.log or log)("debug", "Received </stream:stream>");
+ session:close();
end
function initiate_dialback(session)
@@ -441,7 +446,7 @@ function initiate_dialback(session)
end
function generate_dialback(id, to, from)
- return sha256_hash(id..to..from..dialback_secret, true);
+ return sha256_hash(id..to..from..hosts[from].dialback_secret, true);
end
function verify_dialback(id, to, from, key)
@@ -504,9 +509,31 @@ function mark_connected(session)
end
end
-local function null_data_handler(conn, data) log("debug", "Discarding data from destroyed s2s session: %s", data); end
+local resting_session = { -- Resting, not dead
+ destroyed = true;
+ open_stream = function (session)
+ session.log("debug", "Attempt to open stream on resting session");
+ end;
+ close = function (session)
+ session.log("debug", "Attempt to close already-closed session");
+ 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)); 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, reason)
+ if session.destroyed then return; end
(session.log or log)("info", "Destroying "..tostring(session.direction).." session "..tostring(session.from_host).."->"..tostring(session.to_host));
if session.direction == "outgoing" then
@@ -516,12 +543,7 @@ function destroy_session(session, reason)
incoming_s2s[session] = nil;
end
- for k in pairs(session) do
- if k ~= "trace" then
- session[k] = nil;
- end
- end
- session.data = null_data_handler;
+ retire_session(session); -- Clean session until it is GC'd
end
return _M;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 14:19:23 +0000