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annotate mod_adhoc_blacklist/mod_adhoc_blacklist.lua @ 4942:e7b9bc629ecc

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mod_rest: Add special handling to catch MAM results from remote hosts Makes MAM queries to remote hosts works. As the comment says, MAM results from users' local archives or local MUCs are returned via origin.send() which is provided in the event and thus already worked. Results from remote hosts go via normal stanza routing and events, which need this extra handling to catch. This pattern of iq-set, message+, iq-result is generally limited to MAM. Closest similar thing might be MUC join, but to really handle that you would need the webhook callback mechanism.
author Kim Alvefur <zash@zash.se>
date Mon, 16 May 2022 19:47:09 +0200
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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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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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