annotate mod_admin_blocklist/mod_admin_blocklist.lua @ 5448:9d542e86e19a

mod_http_oauth2: Allow requesting a subset of scopes on token refresh This enables clients to request access tokens with fewer permissions than the grant they were given, reducing impact of token leak. Clients could e.g. request access tokens with some privileges and immediately revoke them after use, or other strategies.
author Kim Alvefur <zash@zash.se>
date Thu, 11 May 2023 21:40:09 +0200
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