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annotate mod_adhoc_blacklist/mod_adhoc_blacklist.lua @ 5160:8474a3b80200

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mod_firewall: Fix 'is_admin' internal dependency rule #1797 (thanks diane) Looks like the boolean logic was inverted here. Instead, for now, simply check if is_admin is there. It is deprecated in trunk and was briefly removed before being brought back with a 'deprecated' warning as part of the new roles and permissions work. Making this dependency conditioned on the existence of the underlying function should make it work until it actually goes away for real.
author Kim Alvefur <zash@zash.se>
date Fri, 27 Jan 2023 23:06:25 +0100
parents efbb73851af9
children
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1 -- mod_adhoc_blacklist
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2 --
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3 -- http://xmpp.org/extensions/xep-0133.html#edit-blacklist
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4 --
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5 -- Copyright (C) 2015 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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9
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10 module:depends("adhoc");
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11 local adhoc = module:require "adhoc";
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12 local st = require"util.stanza";
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13 local set = require"util.set";
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14 local dataform = require"util.dataforms";
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15 local adhoc_inital_data = require "util.adhoc".new_initial_data_form;
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16
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17 local blocklist_form = dataform.new {
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18 title = "Editing the Blacklist";
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19 instructions = "Fill out this form to edit the list of entities with whom communications are disallowed.";
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20 {
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21 type = "hidden";
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22 name = "FORM_TYPE";
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23 value = "http://jabber.org/protocol/admin";
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24 };
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25 {
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26 type = "jid-multi";
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27 name = "blacklistjids";
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28 label = "The blacklist";
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29 };
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30 }
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31
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32 local blocklists = module:open_store("blocklist");
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33
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34 local blocklist_handler = adhoc_inital_data(blocklist_form, function ()
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35 local blacklistjids = {};
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36 local blacklist = blocklists:get();
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37 if blacklist then
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38 for jid in pairs(blacklist) do
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39 table.insert(blacklistjids, jid);
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40 end
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41 end
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42 return { blacklistjids = blacklistjids };
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43 end, function(fields, form_err)
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44 if form_err then
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45 return { status = "completed", error = { message = "Problem in submitted form" } };
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46 end
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47 local blacklistjids = set.new(fields.blacklistjids);
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48 local ok, err = blocklists:set(nil, blacklistjids._items);
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49 if ok then
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50 return { status = "completed", info = "Blacklist updated" };
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51 else
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52 return { status = "completed", error = { message = "Error saving blacklist: "..err } };
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53 end
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54 end);
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55
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56 module:add_item("adhoc", adhoc.new("Edit Blacklist", "http://jabber.org/protocol/admin#edit-blacklist", blocklist_handler, "admin"));
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57
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58 local function is_blocked(host)
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59 local blacklistjids = blocklists:get();
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60 return blacklistjids and blacklistjids[host];
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61 end
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62
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63 module:hook("route/remote", function (event)
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64 local origin, stanza = event.origin, event.stanza;
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65 if is_blocked(event.to_host) then
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66 if origin and stanza then
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67 origin.send(st.error_reply(stanza, "cancel", "not-allowed", "Communication with this domain is not allowed"));
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68 return true;
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69 end
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70 return false;
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71 end
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72 end, 1000);
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73
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74
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75 module:hook("s2s-stream-features", function (event)
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76 local session = event.origin;
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77 if is_blocked(session.from_host) then
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78 session:close("policy-violation");
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79 return false;
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80 end
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81 end, 1000);
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82
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83 module:hook("stanza/http://etherx.jabber.org/streams:features", function (event)
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84 local session = event.origin;
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85 if is_blocked(session.to_host) then
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86 session:close("policy-violation");
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87 return true;
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88 end
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89 end, 1000);
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90