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annotate mod_adhoc_blacklist/mod_adhoc_blacklist.lua @ 5271:3a1df3adad0c

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mod_http_oauth2: Allow user to decide which requested scopes to grant These should at the very least be shown to the user, so they can decide whether to grant them. Considered whether to filter the requested scopes down to actually understood scopes that would be granted, but decided that this was a bit complex for a first step, since role role selection and other kinds of scopes are mixed into the same field here.
author Kim Alvefur <zash@zash.se>
date Thu, 23 Mar 2023 16:28:08 +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