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annotate plugins/muc/hats.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 43b43e7156b8
children 74b9e05af71e
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1 local st = require "util.stanza";
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2 local muc_util = module:require "muc/util";
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3
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4 local xmlns_hats = "xmpp:prosody.im/protocol/hats:1";
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5
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6 -- Strip any hats claimed by the client (to prevent spoofing)
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7 muc_util.add_filtered_namespace(xmlns_hats);
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9
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10 module:hook("muc-build-occupant-presence", function (event)
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11 local bare_jid = event.occupant and event.occupant.bare_jid or event.bare_jid;
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12 local aff_data = event.room:get_affiliation_data(bare_jid);
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13 local hats = aff_data and aff_data.hats;
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14 if not hats then return; end
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15 local hats_el;
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16 for hat_id, hat_data in pairs(hats) do
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17 if hat_data.active then
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18 if not hats_el then
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19 hats_el = st.stanza("hats", { xmlns = xmlns_hats });
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20 end
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21 hats_el:tag("hat", { uri = hat_id, title = hat_data.title }):up();
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22 end
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23 end
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24 if not hats_el then return; end
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25 event.stanza:add_direct_child(hats_el);
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26 end);