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annotate mod_admin_blocklist/mod_admin_blocklist.lua @ 5688:429be658c0bb

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mod_dnsupdate: Support advertising explicit non-existence of service
author Kim Alvefur <zash@zash.se>
date Fri, 03 Nov 2023 23:26:57 +0100
parents 96e83b4a93f7
children
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1 -- mod_admin_blocklist
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2 --
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3 -- If a local admin has blocked a domain, don't allow s2s to that domain
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4 --
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5 -- Copyright (C) 2015-2022 Kim Alvefur
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6 --
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7 -- This file is MIT/X11 licensed.
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8 --
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10 module:depends("blocklist");
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12 local st = require"util.stanza";
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13 local jid_split = require"util.jid".split;
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15 local usermanager = require "core.usermanager";
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17 local admins;
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18 if usermanager.get_jids_with_role then
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19 local set = require "util.set";
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20 local include_roles = module:get_option_set("admin_blocklist_roles", { "prosody:operator"; "prosody:admin" });
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21
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22 admins = set.new();
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23 for role in include_roles do
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24 admins:include(set.new(usermanager.get_jids_with_role(role, module.host)));
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25 end
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26 else -- COMPAT w/pre-0.12
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27 admins = module:get_option_inherited_set("admins", {});
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28 end
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29 admins = admins /
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30 function (admin) -- Filter out non-local admins
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31 local user, host = jid_split(admin);
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32 if host == module.host then return user; end
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33 end
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35 local blocklists = module:open_store("blocklist");
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37 local function is_blocked(host)
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38 for admin in admins do
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39 local blocklist = blocklists:get(admin);
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40 if blocklist and blocklist[host] then
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41 return true;
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42 end
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43 end
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44 end
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46 module:hook("route/remote", function (event)
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47 local origin, stanza = event.origin, event.stanza;
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48 if is_blocked(event.to_host) then
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49 if origin and stanza then
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50 origin.send(st.error_reply(stanza, "cancel", "not-allowed", "Communication with this domain is not allowed"));
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51 return true;
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52 end
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53 return false;
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54 end
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55 end, -9);
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58 module:hook("s2s-stream-features", function (event)
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59 local session = event.origin;
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60 if is_blocked(session.from_host) then
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61 session:close("policy-violation");
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62 return false;
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63 end
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64 end, 1000);
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66 module:hook("stanza/http://etherx.jabber.org/streams:features", function (event)
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67 local session = event.origin;
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68 if is_blocked(session.to_host) then
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69 session:close("policy-violation");
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70 return true;
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71 end
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72 end, 1000);
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73