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annotate mod_restrict_federation/mod_restrict_federation.lua @ 6478:bd785f524fd2

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mod_s2s_v6mesh: Fix various bugs, s2s auth policies now work as expected
author Matthew Wild <mwild1@gmail.com>
date Wed, 18 Mar 2026 18:54:30 +0000
parents ba2c344e1bdd
children 981c14bb8975
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ba2c344e1bdd mod_restrict_federation: Yet another module for restricting s2s for (some) users
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1 local jid_node = require "prosody.util.jid".node;
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2 local st = require "prosody.util.stanza";
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3
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4 local get_user_role = require "prosody.core.usermanager".get_user_role;
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5
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6 function check_outgoing_stanza(event)
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7 local origin, stanza = event.origin, event.stanza;
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8
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9 if not origin or origin.type ~= "c2s" then
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10 -- We only filter user-originated traffic, so
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11 -- pass this through.
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12 return;
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13 end
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14
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15 if module:may("xmpp:federate", event) then
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16 -- Pass through
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17 return;
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18 end
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19
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20 -- Block
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21 module:log("debug", "Forbidding outgoing %s stanza from <%s> to <%s>", stanza.name, stanza.attr.from, stanza.attr.to);
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22 local err_reply = st.error_reply(event.stanza, "auth", "policy-violation", "Communication with remote domains is not permitted");
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23 origin.send(err_reply);
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24 return true;
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25 end
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26
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27 function check_incoming_stanza(event)
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28 local origin, stanza = event.origin, event.stanza;
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29
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30 if origin.type ~= "s2sin" then
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31 -- We only filter incoming traffic from remote domains
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32 -- Pass through
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33 return;
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34 end
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35
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36 local recipient_username = jid_node(stanza.attr.to);
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37 if not recipient_username then
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38 return;
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39 end
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40
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41 local recipient_role, role_err = get_user_role(recipient_username, module.host);
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42 if not recipient_role then
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43 module:log("warn", "Unable to determine recipient role: %s", role_err);
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44 -- No idea what the role is, we'll pass it through
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45 return;
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46 end
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47
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48 if recipient_role:may("xmpp:federate") then
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49 -- Allowed, pass through
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50 return;
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51 end
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52
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53 -- Block
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54 module:log("debug", "Forbidding incoming %s stanza from <%s> to <%s>", stanza.name, stanza.attr.from, stanza.attr.to);
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55 local err_reply = st.error_reply(event.stanza, "cancel", "service-unavailable");
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56 origin.send(err_reply);
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57 return true;
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58 end
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59
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60 module:hook("message/bare", check_incoming_stanza, 500);
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61 module:hook("message/full", check_incoming_stanza, 500);
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62 module:hook("presence/bare", check_incoming_stanza, 500);
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63 module:hook("presence/full", check_incoming_stanza, 500);
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64 module:hook("iq/bare", check_incoming_stanza, 500);
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65 module:hook("iq/full", check_incoming_stanza, 500);
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66
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67 module:hook("route/remote", check_outgoing_stanza, 500);