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annotate plugins/muc/util.lib.lua @ 12694:26a004c96ef8

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util.paseto: Implementation of PASETO v4.public tokens PASETO provides an alternative to JWT with the promise of fewer implementation pitfalls. The v4.public algorithm allows asymmetric cryptographically-verified token issuance and validation. In summary, such tokens can be issued by one party and securely verified by any other party independently using the public key of the issuer. This has a number of potential applications in a decentralized network and ecosystem such as XMPP. For example, such tokens could be combined with XEP-0317 to allow hats to be verified even in the context of a third-party MUC service.
author Matthew Wild <mwild1@gmail.com>
date Fri, 24 Jun 2022 17:03:28 +0100
parents 38159b9adf9f
children
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 -- Copyright (C) 2014 Daurnimator
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5 --
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6 -- This project is MIT/X11 licensed. Please see the
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7 -- COPYING file in the source package for more information.
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8 --
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9
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10 local _M = {};
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11
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12 _M.valid_affiliations = {
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13 outcast = -1;
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14 none = 0;
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15 member = 1;
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16 admin = 2;
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17 owner = 3;
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18 };
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19
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20 _M.valid_roles = {
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21 none = 0;
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22 visitor = 1;
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23 participant = 2;
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24 moderator = 3;
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25 };
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26
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27 local kickable_error_conditions = {
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28 ["gone"] = true;
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29 ["internal-server-error"] = true;
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30 ["item-not-found"] = true;
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31 ["jid-malformed"] = true;
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32 ["recipient-unavailable"] = true;
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33 ["redirect"] = true;
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34 ["remote-server-not-found"] = true;
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35 ["remote-server-timeout"] = true;
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36 ["service-unavailable"] = true;
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37 ["malformed error"] = true;
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38 };
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39 function _M.is_kickable_error(stanza)
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40 local cond = select(2, stanza:get_error()) or "malformed error";
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41 return kickable_error_conditions[cond];
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42 end
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44 local filtered_namespaces = module:shared("filtered-namespaces");
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45 filtered_namespaces["http://jabber.org/protocol/muc"] = true;
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46 filtered_namespaces["http://jabber.org/protocol/muc#user"] = true;
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47
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48 local function muc_ns_filter(tag)
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49 if filtered_namespaces[tag.attr.xmlns] then
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50 return nil;
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51 end
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52 return tag;
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53 end
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54 function _M.filter_muc_x(stanza)
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55 return stanza:maptags(muc_ns_filter);
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56 end
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57
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58 function _M.add_filtered_namespace(xmlns)
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59 filtered_namespaces[xmlns] = true;
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60 end
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61
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62 function _M.only_with_min_role(role)
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63 local min_role_value = _M.valid_roles[role];
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64 return function (nick, occupant) --luacheck: ignore 212/nick
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65 if _M.valid_roles[occupant.role or "none"] >= min_role_value then
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66 return true;
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67 end
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68 end;
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69 end
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70
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71 return _M;