diff options
Diffstat (limited to 'plugins/mod_s2s/mod_s2s.lua')
| -rw-r--r-- | plugins/mod_s2s/mod_s2s.lua | 133 |
1 files changed, 80 insertions, 53 deletions
diff --git a/plugins/mod_s2s/mod_s2s.lua b/plugins/mod_s2s/mod_s2s.lua index aae37b7f..e7ed8797 100644 --- a/plugins/mod_s2s/mod_s2s.lua +++ b/plugins/mod_s2s/mod_s2s.lua @@ -27,8 +27,9 @@ local s2s_destroy_session = require "core.s2smanager".destroy_session; local uuid_gen = require "util.uuid".generate; local fire_global_event = prosody.events.fire_event; local runner = require "util.async".runner; - -local s2sout = module:require("s2sout"); +local connect = require "net.connect".connect; +local service = require "net.resolvers.service"; +local errors = require "util.error"; local connect_timeout = module:get_option_number("s2s_timeout", 90); local stream_close_timeout = module:get_option_number("s2s_close_timeout", 5); @@ -45,6 +46,8 @@ local sessions = module:shared("sessions"); local runner_callbacks = {}; +local listener = {}; + local log = module._log; module:hook("stats-update", function () @@ -77,15 +80,28 @@ local function bounce_sendq(session, reason) (session.log or log)("error", "Attempting to close the dummy origin of s2s error replies, please report this! Traceback: %s", traceback()); end; }; + -- FIXME Allow for more specific error conditions + -- TODO use util.error ? + local error_type = "cancel"; + local condition = "remote-server-not-found"; + local reason_text; + if session.had_stream then -- set when a stream is opened by the remote + error_type, condition = "wait", "remote-server-timeout"; + end + if errors.is_err(reason) then + error_type, condition, reason_text = reason.type, reason.condition, reason.text; + elseif type(reason) == "string" then + reason_text = reason; + end for i, data in ipairs(sendq) do local reply = data[2]; if reply and not(reply.attr.xmlns) and bouncy_stanzas[reply.name] then reply.attr.type = "error"; - reply:tag("error", {type = "cancel", by = session.from_host}) - :tag("remote-server-not-found", {xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"}):up(); - if reason then + reply:tag("error", {type = error_type, by = session.from_host}) + :tag(condition, {xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"}):up(); + if reason_text then reply:tag("text", {xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"}) - :text("Server-to-server connection failed: "..reason):up(); + :text("Server-to-server connection failed: "..reason_text):up(); end core_process_stanza(dummy, reply); end @@ -127,14 +143,9 @@ function route_to_existing_session(event) elseif host.type == "local" or host.type == "component" then log("error", "Trying to send a stanza to ourselves??") log("error", "Traceback: %s", traceback()); - log("error", "Stanza: %s", tostring(stanza)); + log("error", "Stanza: %s", stanza); return false; else - -- FIXME - if host.from_host ~= from_host then - log("error", "WARNING! This might, possibly, be a bug, but it might not..."); - log("error", "We are going to send from %s instead of %s", host.from_host, from_host); - end if host.sends2s(stanza) then return true; end @@ -147,17 +158,13 @@ function route_to_new_session(event) local from_host, to_host, stanza = event.from_host, event.to_host, event.stanza; log("debug", "opening a new outgoing connection for this stanza"); local host_session = s2s_new_outgoing(from_host, to_host); + host_session.version = 1; -- Store in buffer host_session.bounce_sendq = bounce_sendq; host_session.sendq = { {tostring(stanza), stanza.attr.type ~= "error" and stanza.attr.type ~= "result" and st.reply(stanza)} }; - log("debug", "stanza [%s] queued until connection complete", tostring(stanza.name)); - s2sout.initiate_connection(host_session); - if (not host_session.connecting) and (not host_session.conn) then - log("warn", "Connection to %s failed already, destroying session...", to_host); - s2s_destroy_session(host_session, "Connection failed"); - return false; - end + log("debug", "stanza [%s] queued until connection complete", stanza.name); + connect(service.new(to_host, "xmpp-server", "tcp", { default_port = 5269 }), listener, nil, { session = host_session }); return true; end @@ -184,7 +191,10 @@ function module.add_host(module) return true; elseif not session.dialback_verifying then session.log("warn", "No SASL EXTERNAL offer and Dialback doesn't seem to be enabled, giving up"); - session:close(); + session:close({ + condition = "unsupported-feature", + text = "No viable authentication method offered", + }, nil, "No viable authentication method offered by remote server"); return false; end end, -1); @@ -203,7 +213,18 @@ function mark_connected(session) if session.type == "s2sout" then fire_global_event("s2sout-established", event_data); hosts[from].events.fire_event("s2sout-established", event_data); + + if session.incoming then + session.send = function(stanza) + return hosts[from].events.fire_event("route/remote", { from_host = from, to_host = to, stanza = stanza }); + end; + end + else + if session.outgoing and not hosts[to].s2sout[from] then + session.log("debug", "Setting up to handle route from %s to %s", to, from); + hosts[to].s2sout[from] = session; -- luacheck: ignore 122 + end local host_session = hosts[to]; session.send = function(stanza) return host_session.events.fire_event("route/remote", { from_host = to, to_host = from, stanza = stanza }); @@ -223,13 +244,6 @@ function mark_connected(session) end session.sendq = nil; end - - if session.resolver then - session.resolver._resolver:closeall() - end - session.resolver = nil; - session.ip_hosts = nil; - session.srv_hosts = nil; end end @@ -241,7 +255,7 @@ function make_authenticated(event) condition = "policy-violation", text = "Encrypted server-to-server communication is required but was not " ..((session.direction == "outgoing" and "offered") or "used") - }); + }, nil, "Could not establish encrypted connection to remote server"); end end if hosts[host] then @@ -251,15 +265,13 @@ function make_authenticated(event) session.type = "s2sout"; elseif session.type == "s2sin_unauthed" then session.type = "s2sin"; - if host then - if not session.hosts[host] then session.hosts[host] = {}; end - session.hosts[host].authed = true; - end - elseif session.type == "s2sin" and host then + elseif session.type ~= "s2sin" and session.type ~= "s2sout" then + return false; + end + + if session.incoming and host then if not session.hosts[host] then session.hosts[host] = {}; end session.hosts[host].authed = true; - else - return false; end session.log("debug", "connection %s->%s is now authenticated for %s", session.from_host, session.to_host, host); @@ -301,6 +313,7 @@ end function stream_callbacks._streamopened(session, attr) session.version = tonumber(attr.version) or 0; + session.had_stream = true; -- Had a stream opened at least once -- TODO: Rename session.secure to session.encrypted if session.secure == false then @@ -314,7 +327,6 @@ function stream_callbacks._streamopened(session, attr) session.compressed = info.compression; else (session.log or log)("info", "Stream encrypted"); - session.compressed = sock.compression and sock:compression(); --COMPAT mw/luasec-hg end end @@ -322,7 +334,9 @@ function stream_callbacks._streamopened(session, attr) -- Send a reply stream header -- Validate to/from - local to, from = nameprep(attr.to), nameprep(attr.from); + local to, from = attr.to, attr.from; + if to then to = nameprep(attr.to); end + if from then from = nameprep(attr.from); end if not to and attr.to then -- COMPAT: Some servers do not reliably set 'to' (especially on stream restarts) session:close({ condition = "improper-addressing", text = "Invalid 'to' address" }); return; @@ -471,11 +485,9 @@ function stream_callbacks.error(session, error, data) end end -local listener = {}; - --- Session methods local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'}; -local function session_close(session, reason, remote_reason) +local function session_close(session, reason, remote_reason, bounce_reason) local log = session.log or log; if session.conn then if session.notopen then @@ -521,16 +533,16 @@ local function session_close(session, reason, remote_reason) -- 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 == "s2sin" then + if reason == nil and not session.notopen and session.incoming then add_task(stream_close_timeout, function () if not session.destroyed then session.log("warn", "Failed to receive a stream close response, closing connection anyway..."); - s2s_destroy_session(session, reason); + s2s_destroy_session(session, reason, bounce_reason); conn:close(); end end); else - s2s_destroy_session(session, reason); + s2s_destroy_session(session, reason, bounce_reason); conn:close(); -- Close immediately, as this is an outgoing connection or is not authed end end @@ -595,9 +607,8 @@ local function initialize_session(session) if data then local ok, err = stream:feed(data); if ok then return; end - log("warn", "Received invalid XML: %s", data); - log("warn", "Problem was: %s", err); - session:close("not-well-formed"); + log("debug", "Received invalid XML (%s) %d bytes: %q", err, #data, data:sub(1, 300)); + session:close("not-well-formed", nil, "Received invalid XML from remote server"); end end @@ -672,11 +683,16 @@ function listener.ondisconnect(conn, err) local session = sessions[conn]; if session then sessions[conn] = nil; + (session.log or log)("debug", "s2s disconnected: %s->%s (%s)", session.from_host, session.to_host, err or "connection closed"); + s2s_destroy_session(session, err); + end +end + +function listener.onfail(data, err) + local session = data and data.session; + if session then if err and session.direction == "outgoing" and session.notopen then (session.log or log)("debug", "s2s connection attempt failed: %s", err); - if s2sout.attempt_connection(session, err) then - return; -- Session lives for now - end end (session.log or log)("debug", "s2s disconnected: %s->%s (%s)", session.from_host, session.to_host, err or "connection closed"); s2s_destroy_session(session, err); @@ -700,6 +716,15 @@ function listener.ondetach(conn) sessions[conn] = nil; end +function listener.onattach(conn, data) + local session = data and data.session; + if session then + session.conn = conn; + sessions[conn] = session; + initialize_session(session); + end +end + function check_auth_policy(event) local host, session = event.host, event.session; local must_secure = secure_auth; @@ -713,9 +738,10 @@ function check_auth_policy(event) if must_secure and (session.cert_chain_status ~= "valid" or session.cert_identity_status ~= "valid") then module:log("warn", "Forbidding insecure connection to/from %s", host or session.ip or "(unknown host)"); if session.direction == "incoming" then - session:close({ condition = "not-authorized", text = "Your server's certificate is invalid, expired, or not trusted by "..session.to_host }); + session:close({ condition = "not-authorized", text = "Your server's certificate is invalid, expired, or not trusted by "..session.to_host }, + nil, "Remote server's certificate is invalid, expired, or not trusted"); else -- Close outgoing connections without warning - session:close(false); + session:close(false, nil, "Remote server's certificate is invalid, expired, or not trusted"); end return false; end @@ -723,8 +749,6 @@ end module:hook("s2s-check-certificate", check_auth_policy, -1); -s2sout.set_listener(listener); - module:hook("server-stopping", function(event) local reason = event.reason; for _, session in pairs(sessions) do @@ -739,6 +763,9 @@ module:provides("net", { listener = listener; default_port = 5269; encryption = "starttls"; + ssl_config = { -- FIXME This is not used atm, see mod_tls + verify = { "peer", "client_once", }; + }; multiplex = { pattern = "^<.*:stream.*%sxmlns%s*=%s*(['\"])jabber:server%1.*>"; }; |