Mercurial > prosody-modules

annotate mod_s2soutinjection/mod_s2soutinjection.lua @ 5086:dec4b2e31d1c

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mod_rest: Do not allow replies to <iq type=result> from webhooks Replying to a result stanza could cause loops, just as replying to an error. No stanza.name check here but it should be fine since no other kinds of stanzas have type=result, and the boolean logic would most definitely be wrong on the first attempt.
author Kim Alvefur <zash@zash.se>
date Sun, 27 Nov 2022 00:10:38 +0100
parents f4a9e804c457
children e55d1f7a570a
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1 local st = require"util.stanza";
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2 local new_ip = require"util.ip".new_ip;
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3 local new_outgoing = require"core.s2smanager".new_outgoing;
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4 local bounce_sendq = module:depends"s2s".route_to_new_session.bounce_sendq;
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5 local initialize_filters = require "util.filters".initialize;
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6 local st = require "util.stanza";
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8 local portmanager = require "core.portmanager";
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10 local addclient = require "net.server".addclient;
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12 module:depends("s2s");
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14 local sessions = module:shared("sessions");
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16 local injected = module:get_option("s2s_connect_overrides");
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17
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18 -- The proxy_listener handles connection while still connecting to the proxy,
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19 -- then it hands them over to the normal listener (in mod_s2s)
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20 local proxy_listener = { default_port = port, default_mode = "*a", default_interface = "*" };
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22 function proxy_listener.onconnect(conn)
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23 local session = sessions[conn];
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25 -- Now the real s2s listener can take over the connection.
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26 local listener = portmanager.get_service("s2s").listener;
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28 local w, log = conn.send, session.log;
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30 local filter = initialize_filters(session);
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32 session.version = 1;
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34 session.sends2s = function (t)
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35 log("debug", "sending (s2s over proxy): %s", (t.top_tag and t:top_tag()) or t:match("^[^>]*>?"));
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36 if t.name then
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37 t = filter("stanzas/out", t);
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38 end
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39 if t then
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40 t = filter("bytes/out", tostring(t));
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41 if t then
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42 return conn:write(tostring(t));
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43 end
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44 end
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45 end
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47 session.open_stream = function ()
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48 session.sends2s(st.stanza("stream:stream", {
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49 xmlns='jabber:server', ["xmlns:db"]='jabber:server:dialback',
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50 ["xmlns:stream"]='http://etherx.jabber.org/streams',
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51 from=session.from_host, to=session.to_host, version='1.0', ["xml:lang"]='en'}):top_tag());
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52 end
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54 conn.setlistener(conn, listener);
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56 listener.register_outgoing(conn, session);
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58 listener.onconnect(conn);
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59 end
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61 function proxy_listener.register_outgoing(conn, session)
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62 session.direction = "outgoing";
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63 sessions[conn] = session;
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64 end
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65
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66 function proxy_listener.ondisconnect(conn, err)
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67 sessions[conn] = nil;
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68 end
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70 module:hook("route/remote", function(event)
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71 local from_host, to_host, stanza = event.from_host, event.to_host, event.stanza;
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72 local inject = injected and injected[to_host];
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73 if not inject then return end
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74 log("debug", "opening a new outgoing connection for this stanza");
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75 local host_session = new_outgoing(from_host, to_host);
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76
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77 -- Store in buffer
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78 host_session.bounce_sendq = bounce_sendq;
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79 host_session.sendq = { {tostring(stanza), stanza.attr.type ~= "error" and stanza.attr.type ~= "result" and st.reply(stanza)} };
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80 log("debug", "stanza [%s] queued until connection complete", tostring(stanza.name));
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81
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82 local host, port = inject[1] or inject, tonumber(inject[2]) or 5269;
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84 local conn = addclient(host, port, proxy_listener, "*a");
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86 proxy_listener.register_outgoing(conn, host_session);
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87
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88 host_session.conn = conn;
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89 return true;
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90 end, -2);