prosody-modules
259ffdbf8906
mod_s2soutinjection/mod_s2soutinjection.lua

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mod_s2soutinjection/mod_s2soutinjection.lua @ 5883:259ffdbf8906

mod_anti_spam: New module for spam filtering (pre-alpha)
author Matthew Wild <mwild1@gmail.com>
date Tue, 05 Mar 2024 18:26:29 +0000
parent 5103:4fb922aa0ace
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1089
4057f176be7b mod_s2soutinjection: Initial commit, variant of mod_srvinjection using 0.9+ APIs
Kim Alvefur <zash@zash.se>
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1 local st = require"util.stanza";
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2 local new_outgoing = require"core.s2smanager".new_outgoing;
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3 local bounce_sendq = module:depends"s2s".route_to_new_session.bounce_sendq;
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4 local initialize_filters = require "util.filters".initialize;
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5
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6 local portmanager = require "core.portmanager";
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7
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8 local addclient = require "net.server".addclient;
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10 module:depends("s2s");
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12 local sessions = module:shared("sessions");
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13
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14 local injected = module:get_option("s2s_connect_overrides");
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15
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16 -- The proxy_listener handles connection while still connecting to the proxy,
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17 -- then it hands them over to the normal listener (in mod_s2s)
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18 local proxy_listener = { default_port = nil, default_mode = "*a", default_interface = "*" };
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20 function proxy_listener.onconnect(conn)
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21 local session = sessions[conn];
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23 -- Now the real s2s listener can take over the connection.
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24 local listener = portmanager.get_service("s2s").listener;
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25
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26 local log = session.log;
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28 local filter = initialize_filters(session);
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30 session.version = 1;
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32 session.sends2s = function (t)
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33 log("debug", "sending (s2s over proxy): %s", (t.top_tag and t:top_tag()) or t:match("^[^>]*>?"));
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34 if t.name then
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35 t = filter("stanzas/out", t);
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36 end
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37 if t then
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38 t = filter("bytes/out", tostring(t));
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39 if t then
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40 return conn:write(tostring(t));
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41 end
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42 end
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43 end
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44
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45 session.open_stream = function ()
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46 session.sends2s(st.stanza("stream:stream", {
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47 xmlns='jabber:server', ["xmlns:db"]='jabber:server:dialback',
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48 ["xmlns:stream"]='http://etherx.jabber.org/streams',
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49 from=session.from_host, to=session.to_host, version='1.0', ["xml:lang"]='en'}):top_tag());
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50 end
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51
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52 conn.setlistener(conn, listener);
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53
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54 listener.register_outgoing(conn, session);
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55
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56 listener.onconnect(conn);
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57 end
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58
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59 function proxy_listener.register_outgoing(conn, session)
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60 session.direction = "outgoing";
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61 sessions[conn] = session;
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62 end
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63
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64 function proxy_listener.ondisconnect(conn, err)
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65 sessions[conn] = nil;
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66 end
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67
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68 module:hook("route/remote", function(event)
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69 local from_host, to_host, stanza = event.from_host, event.to_host, event.stanza;
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70 local inject = injected and injected[to_host];
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71 if not inject then return end
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72 module:log("debug", "opening a new outgoing connection for this stanza");
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73 local host_session = new_outgoing(from_host, to_host);
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74
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75 -- Store in buffer
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76 host_session.bounce_sendq = bounce_sendq;
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77 host_session.sendq = { {tostring(stanza), stanza.attr.type ~= "error" and stanza.attr.type ~= "result" and st.reply(stanza)} };
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78 host_session.log("debug", "stanza [%s] queued until connection complete", tostring(stanza.name));
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79
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80 local host, port = inject[1] or inject, tonumber(inject[2]) or 5269;
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81
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82 local conn = addclient(host, port, proxy_listener, "*a");
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83
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84 proxy_listener.register_outgoing(conn, host_session);
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85
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86 host_session.conn = conn;
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87 return true;
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88 end, -2);