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annotate mod_omemo_all_access/mod_omemo_all_access.lua @ 3257:f09d92579158

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mod_atom: Add a brief README
author Kim Alvefur <zash@zash.se>
date Fri, 24 Aug 2018 16:16:30 +0200
parents 9505282ad24f
children
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1 -- OMEMO all access module
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2 -- Copyright (c) 2017 Daniel Gultsch
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3 --
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4 -- This module is MIT/X11 licensed
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5 --
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6
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7 local jid_bare = require "util.jid".bare;
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8 local st = require "util.stanza"
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9 local white_listed_namespace = "eu.siacs.conversations.axolotl."
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10 local disco_feature_namespace = white_listed_namespace .. "whitelisted"
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11
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12 local mm = require "core.modulemanager";
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13
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14
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15 -- COMPAT w/trunk
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16 local pep_module_name = "pep";
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17 if mm.get_modules_for_host then
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18 if mm.get_modules_for_host(module.host):contains("pep_simple") then
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19 pep_module_name = "pep_simple";
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20 end
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21 end
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22
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23 local mod_pep = module:depends(pep_module_name);
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24 local pep_data = mod_pep.module.save().data;
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25
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26 if not pep_data then
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27 module:log("error", "This module is not compatible with your version of mod_pep");
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28 if mm.get_modules_for_host then
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29 module:log("error", "Please use mod_pep_simple instead of mod_pep to continue using this module");
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30 end
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31 return false;
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32 end
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33
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34 local function on_account_disco_info(event)
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35 (event.reply or event.stanza):tag("feature", {var=disco_feature_namespace}):up();
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36 end
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37
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38 local function on_pep_request(event)
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39 local session, stanza = event.origin, event.stanza
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40 local payload = stanza.tags[1];
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41 if stanza.attr.type == 'get' then
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42 local node, requested_id;
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43 payload = payload.tags[1]
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44 if payload and payload.name == 'items' then
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45 node = payload.attr.node
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46 local item = payload.tags[1];
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47 if item and item.name == 'item' then
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48 requested_id = item.attr.id;
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49 end
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50 end
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51 if node and string.sub(node,1,string.len(white_listed_namespace)) == white_listed_namespace then
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52 local user = stanza.attr.to and jid_bare(stanza.attr.to) or session.username..'@'..session.host;
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53 local user_data = pep_data[user];
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54 if user_data and user_data[node] then
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55 local id, item = unpack(user_data[node]);
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56 if not requested_id or id == requested_id then
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57 local reply_stanza = st.reply(stanza)
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58 :tag('pubsub', {xmlns='http://jabber.org/protocol/pubsub'})
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59 :tag('items', {node=node})
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60 :add_child(item)
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61 :up()
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62 :up();
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63 session.send(reply_stanza);
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64 module:log("debug","provided access to omemo node",node)
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65 return true;
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66 end
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67 end
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68 module:log("debug","requested node was white listed", node)
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69 end
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70 end
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71 end
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72
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73 module:hook("iq/bare/http://jabber.org/protocol/pubsub:pubsub", on_pep_request, 10);
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74 module:hook("account-disco-info", on_account_disco_info);